How to disassemble the door of the microwave rolsen

Repair door of the microwave of Rolsen with your own hands

Modern microwave ovens greatly facilitate heating, and often cooking. They are used by all family members, including children. But, with improper care, these household assistants often break.

In the article I show how an ordinary home electrician with an average level of skills can carry out the repair of a microwave with my own hands: I help him in detail with my advice and visual pictures.

Given the long.term experience of the manufacturer and the experience of the relayer of the high.voltage laboratory, I immediately pay attention to the dangers embedded in the design of the microwave oven. I give them half the material, but you can immediately go to the main part.

What is the dangerous microwave: what needs to be clearly represented in its device before the start of repair and even purchase. 5 dangerous factors

The main law of repair of unfamiliar electrical appliances can be formulated briefly: do not harm! Therefore, it is important to understand the principle of their operation, the risks of damage to equipment and injuries.

There are 5 of them in this design. (Five, Karl!) Consider them sequentially in terms of importance.

The threat of superly high radiation is the main danger in the repair and operation of microwave equipment

In any household microwave oven, heating of food occurs due to its irradiation by electromagnetic waves. They are emitted by the antenna of the magnetron. Then they are concentrated by the waveguide and sent through its window directly to the heated object.

The design of the device, as we see, uses the energy of the microwave radiation that affects all the objects that are located in its way. These rays are capable of:

  • Heat food;
  • to boil water;
  • Heat hard substances;
  • inducing large currents in metals;
  • disable semiconductor elements;
  • create burns on the skin;
  • burn the eyeball;
  • do useful work or do various troubles.

Manufacturers take into account all these risks. They created a continuous, double structure of the metal case according to the principle of the pharanda cell.

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It is designed to block the release of microwave radiation outside the culinary chamber in any direction, whether it be the back, bottom, upper, side wall or open door.

I will not focus on the fact that the microwave radiation in different models is capable of firing, breaking through all kinds of defects and cracks. This is another topic.

Just in case, keep in mind that industry is not in vain produces microwave detectors, which are tested by operated furnaces in working condition.

If a small gap occurs between the door and the body, then electromagnetic waves from magnetron will penetrate through it.

Therefore, the safety of the structure is ensured by a tight fit of the door to the side walls and the tight control of this state by the operation of the end switches. One of the options for their connection is shown below.

In an open state, two SWA and SWB contacts exclude the supply of power to a high.voltage transformer with a magnetron that forms high.frequency pulses, and the third SWC prepares a short circuit in the CREAM IN THE SWA.

It will be eliminated by combustion of the built.in fuse of the network of 220 volts and is reserved by the operation of the circuit breaker in the apartment shield.

Here is such a double protection by microswallors and the manufacture of a case in the form of a Faraday cage was introduced by manufacturers from random irradiation of users with dangerous electromagnetic waves. We can’t break it.

Since there are few at home detector of microwave radiation, it is permissible to check the work of the Faradey cell to be performed by any mobile phone. It is placed inside the microwave, closed the door and dial a number from the second phone. The call signal should be clearly blocked by a shielding grill.

Never forget about the danger created by high.frequency electromagnetic irradiation.

Threats and 3. 2 type of high voltage voltage. where and what risks the repairman is exposed

The loud name “magnetron” was fixed for an ordinary electronic lamp collected according to the diode scheme. She passes the electric current in one direction, using the ancient principle of thermoelectronic emission.

The magnetron receives all power supply from the output of the transformer connected to the household network. On his secondary coils, it transforms:

The heating chains are made by a thick wire designed for a constant load of 10 amperes, and the high.voltage coil and its wires are distinguished by high dielectric properties.

Checking output circuits of a transformer under voltage

The high.voltage sinusoid two kilovolts can be traced at the ends of the output coil of conclusions or between the grounding and lining of the capacitor.

The voltage of 4 kilovts is present on the anode and cathode of the magnetron or between the potentials of the Earth and the anode of the high.voltage diode VD1.

Here it is necessary to show maximum caution.

What risks were hidden in checking the transformer when the power is disconnected

I pay attention to the high.voltage capacitor, which is able to store the charge received during operation. It must be discharged in advance before working with the transformer and its chains.

In some designs, this possibility is provided for by a circuit solution (parallel connection of a current.limiting resistor, which can even be built into the general case with a capacitor), while others are absent.

The risks of obtaining a high.voltage discharge are high, they must be taken into account when repairing.

The threat of 230 volts of a household network is a “familiar” danger

I will not allocate anything here. On this issue I have a lot of information on the blog. I emphasize only one important thought, for which the usual word put in quotation.

From this rule, another item follows, which should be considered not only during repair.

The threat as quite by chance can be obtained from the current from the microwave oven in your apartment. hidden dangers that need to be prevented in advance

It applies to almost all owners of complex electronic technology, and not just the microwave of furnaces, still powered according to the old Soviet scheme TN-C. I also live in such a building and show photographs the presence of dangerous potential on the microwave building.

DIY microwave repair on the example of a microwave oven Samsung M1974NR

Coming and crackle inside microwave ovens are the most common phenomena that occur during their breakdown. Why is this happening? The manufacturer who knows about this did not make changes to the design of them in time or the rules for their operation by the user are violated? Confirmed both.

But since the furnace is purchased and is already used for its intended purpose, it is necessary to prevent the second reason and steadily adhere to the rule: “We are responsible for the one we tame”.

In order to understand the processes occurring during the work of the microwave oven and their breakdowns, reading this page will be not enough. I will try, how to briefly state the essence of one, but often arising problem. So, the repair of a microwave oven with your own hands. an example will serve, which appeared on the repair table, the microwave oven Samsung M1974NR.

First, consider the basic principle of the work of the microwave oven.

220 volts through a special control scheme is fed to the primary winding of the power transformer. Further, using a power transformer (which also plays the role of a stabilizer), the voltage is supplied to the voltage doubling circuit collected on VD1, C1 (rice.2).

Resistance R1 has a rating of 1 to 10 MOM and it is necessary to ensure the discharge of the capacitor C1 when the furnace is turned off. In imported capacitors, the resistor is mounted inside.

The VD2 safety diode serves to protect the transformer from overheating in case of closing in the magnetron or excessive increase in voltage at the condenser C1.

When closed, the current in secondary windings increases sharply, which leads to an increase in the current in the primary windings and the fuse is burned out.

This diode can be neglected, t.e. do not install it, but in this case it is necessary to install a fuse strictly in face value.

If you measure the voltage on the Cathode of the magnetron, it will be equal.4000 volts (negative), which means that on the anode relative to the cathode the voltage will be equal to 4000 volts. Magnetron power supply ensures the production of supply voltages: anode voltage UA = 4000 volts a = 300 mA. The intensity voltage u = 3.15 volts a = 10 amperes.

Microwave door replacement and repair. Whirlpool, Maytag, & Roper

Magnetron

Magnetron (Fig.3). this is a vacuum diode whose anode is made in the form of a copper cylinder. Magantron is attached directly on the waves. one. Metal cap is planted on a ceramic insulator 2. 3. The outer casing of the magnetron. four. Flange with holes for mounting. 5 ring magnets are used to distribute the magnetic field. 6. Ceramic cylinder for isolation of the antenna. 7. The radiator serves for better cooling. eight. Filter box. 9. Magnetron connection unit with a power source contains transitional capacitors, which, together with throssels, form a microwave filter to protect against the penetration of microwave radiation from magnetron. ten. Food conclusions.

Magantron defects:

With a breakdown, there are often cases when the cap melts. Can be replaced with a cap from another magnetron.

As any lamp, he can lose his emission, due to long work or due to the inclusion of magnetron on an empty chamber, as a result of which the energy of energy is significantly reduced and the cooking time increases significantly. You can increase the duration of the magnetron service, adding the intensity of the intensity. To do this, it is necessary to drown 0.5 coil of the glow winding. (In some cases, it is possible to extend the service life up to 3 years). Unfortunately, not every transformer allows you to do such a manipulation.

The breakdown of transitional capacitors can be found using a tester. Pasting occurs on the body of the magnetron. It is treated by replacing the node 9 (see drawing).

When replacing the magnetron, it is necessary to strictly comply with the rules.

The diameter of the antenna and fasteners must exactly coincide with the original. 2. The magnetron should in contact with the waves. 3. The length of the antenna must exactly correspond to the original. four. The power of the magnetron must coincide.

Some sources say that the cap from the antenna can not be placed, but at the same time, if it burns out, then the antenna itself (the pinned end of the tube) and the magnetron will have to be thrown away. It is better to buy magnetrons at firms where they will make it possible to exchange it if, for example, a seat does not work.

In those furnaces where the manufacturer has a short.wave magnetron can observe such a defect as a breakdown of a mica cover (rice.four).

The second reason leading to similar consequences can be excessive contamination of the cover. The dielectric properties of dirt are far from ideal, so it will absorb energy and overheat. Under certain conditions, the temperature of the pollution can reach the value at which they will begin to be charged. In our case, traces of fat, flowing between a mica lid and a body and leaked right into the middle of the window (rice.four). A clear short circuit and caused the burning of the cap (rice.5).

If the carbonization process has not gone too far, you can restore the performance of the microwave oven by removing the lid and removing the contaminated and charred places.

The expression “not too far” means that in the process of stripping you removed all unnecessary and at the same time did not reach through holes.

Safety measures when working with microwaves

  • You can not turn on the stove with an open door or net.
  • You can not make holes in the housing.
  • Do not leave the mounting garbage in the waveguide. Garbage will lead to a violation of the spread of the microwave of the waves in the waveguide, and as a result of which the microwave oven will give radiation.
  • Always discharge the container (capacitor) in the power supply chains of an isolated wire (the resistor sometimes fails).

The materials of the book of Saulov a. YU. “Modern microwaves”

Vanyushin Mikhail (Eleczon.ru/elektrik/40-mikrovolnovaya-pech.html)

How to disassemble the microwave yourself. How to disassemble the microwave door

At first glance, it may seem that the microwave. the stove is a complex device, in fact it has a simple design. It includes the following basic elements:

The latter is needed to connect a magnetron with a camera.

disassemble, door, microwave, rolsen

Is it possible to disassemble the microwave on your own

Undoubtedly, it is possible if the elementary safety rules are observed. First: before this, to disassemble the stove, it is disconnected from the supply network and the voltage is removed from the high.voltage modules.

Important! When the device is turned on, it is prohibited to disassemble it.

How to disassemble a microvivation: instructions step by step

Like any technical device, it is dismantled in a certain sequence.

Removing the casing

At the first stage, the casing is removed, for this you need to turn off the cord from the power nest, turn the fasteners from the rear and side surfaces of the stove. When the casing is freed, it should be moved back and raised up.

Turning off the power cable

After the casing is removed, you can start removing the power cord. Disconnect the conclusions from the filter and disconnect the middle cable of the supply cord.

ATTENTION! Do not forget that an electrical protection tool is used to discharge a high.voltage capacitor.

Dismantling the front panel and control unit

To dismantle the panel and control module, it is necessary to carry out the following manipulations. turn off the cable from the control module. Extract the fasteners and fasteners fixing the module. After plastic fasteners are cleared up, pull the control panel. The block is mounted with three screws that must be removed to extract. At the last stage, it is necessary to remove the indication panel.

Important! Dismantling is performed carefully, when you turn off the cables, it is not recommended to pull for them.

Dismantling the door

After the control unit is pulled out, it is permissible to start removing the door. It is opened, and remove the restrictive plate using a screwdriver with a flat slot. When working, it is required to be careful. One careless movement. and you can damage the rubber seal. Then raise and remove the door.

Important! After repeated installation of the door, check the serviceability of the switches.

Dismantling can affect the level of microwave radiation. The maximum level should not be more than 4 MW./cm2.

After the reverse assembly, you must make sure that the door and frame are parallel. As needed, the configuration is performed. The door should be installed so that there is no gap between her and the chassis.

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Extracting the magnetron

When removing the magnetron, you need to turn off the cables from the capacitor and the transformer. Bring out the fasteners that holds them on the frame. The assembly is disconnected until the tip comes out to the end from the waveguide.

When extracting, it should not be allowed by the details installed by a nearby. This can lead to damage. After the magnetron returns to the place, you will need to check the radiation level. It should not exceed 5 MW./cm2.

Extracting a noise filter, diodes and other components

The following manipulations are done for this:

  • Turn off the power harnesses from the filter and remove the fasteners fixing the filter ground wire to the rear wall.
  • After that, the filter is removed. To do this, click on two plastic latches.
  • After the power harnesses from the container are disconnected, and the screw is unscrewed, the grounding wire of the high.voltage diode is fixed.
  • At the next stage, tans from the current and fan relay are unhooked. Then remove the fan mount and remove.

The filter extracts should be carried out with caution, because it may contain various pathogenic organisms.

Removing the backlight lamp

In order to remove the lighting lamp disconnect the wires from the llama and remove the fasteners, fastening the duct to the magnetron. After pressing the latches, the air duct takes out the indication panel.

In general, the extraction of the components of the microwave. the furnace is carried out according to one scheme:

How to disassemble the microwave at home: step.by.step instructions and practical tips

Each model has its own characteristics. If a cross.shaped screwdriver needs one device, then for another it may not fit.

First, fasteners are turned off from the side and rear surfaces of the technique. Remove the casing of the device, moving it back and lifting it up. Dismantle the power cord, disconnecting the conclusions from the filter.

Then move on to the removal of the front panel and control unit. To do this, carefully disconnect the cable from the control module. Remove the fasteners and plastic fasteners that fixes the module and take out the control panel. After that, the induction panel is removed.

Dismantling doors. It is opened and removed by a restrictive plate using a screwdriver with a flat spitz. All actions are performed carefully so as not to damage the rubber seal. Then the door is raised and removed. During the reverse assembly, the door is installed parallel to the frame, without gaps. If necessary, set it up.

To extract magnetron, turn off the cables from the transformer and capacitor. Remove the fasteners holding them on the frame. The assembly is disconnected until the tip comes out until the end of the waveguide. After the magnetron is installed in place, the radiation level is checked. It should be no higher than 5 MW/cm².

Then the obstruction filter is removed, disconnecting the power harnesses from it and removing the fasteners, which fixes the ground wire to the rear wall. Press on two plastic latches and take it out. After that, the power harnesses are disconnected from the container, the screw is unscrewed, the grounding wire of the high.voltage diode is fixed. At the next stage, tans from the current and fan relay are unhooked. Remove fasteners and remove the fan.

If you need to get the backlight lamp, the wires are disconnected from it and the fastener is removed that fixes the duct to the magnetron. Pressing the latches of the duct, extract an indication panel.

Reference. To extract parts from the microwave, they act according to one principle: turn off the wires, remove the fasteners and take out the part.

The assembly of the equipment is carried out in the reverse order. To simplify the process, the analysis of the device is better to record on the camera or photograph. Gathering a microwave, they act very carefully so as not to damage it and not lead to a leakage of microwave radiation.

Parsing the microwave doors

It happens that malfunctions in the work of the microwave occur due to the door. Regardless of the design model have many common points. Doors have a puff structure, which includes a supporting (metal), protective and external (decorative) layer. They differ from each other by the number of layers, the material of manufacture and the method of fastening.

Consider how to disassemble the microwave door:

  • First, tools are prepared: a knife and 2 screwdrivers with a wide flat blade.
  • The process begins with disconnecting the framework of the sealing.
  • Then the external frame is separated, which is recorded by screws or latches.
  • If the door was required to be cleaned of pollution, the analysis process is completed on this.
  • At the next stage, it is neat, so as not to break, the glass is separated from the plastic finish.
  • When necessary, a film is removed from the inside of the door, which is fixed on a metal base.

How to remove a door handle on a microwave

Possible malfunctions

Microwaves from all brands (Panasonic, Samsung or LG) have the same structure. They consist of:

  • power transformer;
  • windings;
  • capacitor;
  • diodes (high.voltage and safety);
  • initial winding;
  • magnetron.

Heating occurs due to the last element. With any malfunctions, the problem is first diagnosed. To do this, sequentially check all the details that can be divided into three main blocks. This is a warm.up camera, a waveguide and a magnetron transformer.

The extreme unit provides a timely transition of electric energy that occurs as a result of the exposure of alternating current from one type of voltage to another. The frequency of microwave rays remains unchanged. Before starting work, be sure to turn off the household device from the network.

There are many reasons for the release of the microwave from the working regime, among them:

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  • Insufficient voltage of electric current.
  • Overloading the mains.
  • Door malfunction, due to which there is no heating of food to the fullest.
  • The inattention of the owner.
  • Incorrect operation.
  • Physical deterioration.
  • Lack of timely replacement of details that failed.

How to disassemble the microwave Samsung (LG, Panasonic, Daewoo)

It is not recommended to take on independent microwave repair. Without appropriate knowledge and skills, there will be no benefit from it. Most likely a household device will finally fail.

If there is no way to contact professionals, they act according to the following instructions:

  • Disable the household device from the network.
  • Remove its back cover, which is attached by means of bolts.
  • Examine the fuses (two of them). If the thread of the intensity inside them burned out, then the way out of the situation will only be a complete replacement.
  • To evaluate the condition of the microdigator remove the lower microwave cover.
  • To inspect the magnetron, you will have to eliminate obstacles in the form of a transformer and duct.
  • The control panel is disconnected by removing the screws.

The microwave should be assembled neatly, one movement can cause a leakage of microwave radiation, which leads not only to the complete breakdown of the equipment, but also to health problems.

In some cases, violations in the operation of the device are associated with its door. Disassemble the door of the microwave is easy. Despite a large number of variations of its design, there are many general points. All doors have a “puff” structure. The number of these layers, manufacturing material and the method of attaching them are considered the main differences.

Samsung microwave (LG, Panasonic) has the following “layers”:

How to disassemble the microwave door? A knife and two screwdrivers are required, characterized by a wide flat blade. To begin with, we separate the frame of the seal, after the line of decorative finishes comes, it is usually attached by means of screws or latches. At this stage, one should stop those who disassemble the door in order to clean it from pollution. The next step is to separate the glass from the plastic decoration of the door. You need to act very carefully, since glass is a fragile material. The last remains: on the inside of the door on a metal base there is a film designed to protect, it must be removed.

How to disassemble the microwave: is it possible to disassemble the magnetron of the microwave oven

To fix the microwave oven, knowledge is needed in the field of electrical and radio engineering, as well as tools to analyze it. With independent repair, it is important to observe safety regulations. In case of uncertainty in your abilities, it is better to contact specialists.

Is it possible to disassemble the microwave

The microwave oven consists of a power transformer, winding, capacitor, diodes (high.voltage and safety), initial winding and magnetron, which provides heating. If in her work there is a malfunction, first the problem is diagnosed, checking sequentially all the details.

They are divided into three blocks:

To do this, disassemble the microwave oven. It is not recommended to do this yourself. Without knowledge and understanding of the principle of operation of technology, this will not give the desired result and will lead to the final breakdown of the device.

If the user decided to disassemble and repair a household device with his own hands, he must remember about compliance with safety regulations. First, the microwave oven is disconnected from the electric network and the voltage is removed from the high-voltage modules using an electrical protection tool.

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Touch buttons are not pressed on the microwave

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Replacing the microwave of the plate in the microwave

How to disassemble the microwave at home: step.by.step instructions and practical tips

Each model has its own characteristics. If a cross.shaped screwdriver needs one device, then for another it may not fit.

First, fasteners are turned off from the side and rear surfaces of the technique. Remove the casing of the device, moving it back and lifting it up. Dismantle the power cord, disconnecting the conclusions from the filter.

Then move on to the removal of the front panel and control unit. To do this, carefully disconnect the cable from the control module. Remove the fasteners and plastic fasteners that fixes the module and take out the control panel. After that, the induction panel is removed.

Dismantling doors. It is opened and removed by a restrictive plate using a screwdriver with a flat spitz. All actions are performed carefully so as not to damage the rubber seal. Then the door is raised and removed. During the reverse assembly, the door is installed parallel to the frame, without gaps. If necessary, set it up.

To extract magnetron, turn off the cables from the transformer and capacitor. Remove the fasteners holding them on the frame. The assembly is disconnected until the tip comes out until the end of the waveguide. After the magnetron is installed in place, the radiation level is checked. It should be no higher than 5 MW/cm².

Then the obstruction filter is removed, disconnecting the power harnesses from it and removing the fasteners, which fixes the ground wire to the rear wall. Press on two plastic latches and take it out. After that, the power harnesses are disconnected from the container, the screw is unscrewed, the grounding wire of the high.voltage diode is fixed. At the next stage, tans from the current and fan relay are unhooked. Remove fasteners and remove the fan.

If you need to get the backlight lamp, the wires are disconnected from it and the fastener is removed that fixes the duct to the magnetron. Pressing the latches of the duct, extract an indication panel.

Reference. To extract parts from the microwave, they act according to one principle: turn off the wires, remove the fasteners and take out the part.

The assembly of the equipment is carried out in the reverse order. To simplify the process, the analysis of the device is better to record on the camera or photograph. Gathering a microwave, they act very carefully so as not to damage it and not lead to a leakage of microwave radiation.

Parsing the microwave doors

It happens that malfunctions in the work of the microwave occur due to the door. Regardless of the design model have many common points. Doors have a puff structure, which includes a supporting (metal), protective and external (decorative) layer. They differ from each other by the number of layers, the material of manufacture and the method of fastening.

Consider how to disassemble the microwave door:

  • First, tools are prepared: a knife and 2 screwdrivers with a wide flat blade.
  • The process begins with disconnecting the framework of the sealing.
  • Then the external frame is separated, which is recorded by screws or latches.
  • If the door was required to be cleaned of pollution, the analysis process is completed on this.
  • At the next stage, it is neat, so as not to break, the glass is separated from the plastic finish.
  • When necessary, a film is removed from the inside of the door, which is fixed on a metal base.

How to disassemble the magnetron microwave and replace it yourself

Most often, the magnetron of the microwave is not amenable to repair. If the part has worn out, its depressurization or a break in the filament occurred, it is changed to a new. Когда выходит из строя колпачок на антенне или проходной конденсатор, их меняют, если имеются инструменты.

Before proceeding with the analysis and repair, the system is checked for performance. First pay attention to the power source. Weak voltage causes failures in the operation of the device.

If it meets the norm, the microwave is disassembled:

  • Conduct an inspection whether the cap of the antenna has burned out, is there any deformation, holes and traces of Gary on the case and filter.
  • If there are no external signs of damage, the magnetron is nicknamed the multimeter.
  • Disconnect the terminals with wires.
  • Tester include and set the 200 Ohm mode.
  • The probes are attached to the conclusions. If the winding is whole, the multimeter will show low resistance (about 0.5 Ohms), while a squeak or ringing will be heard. Когда тестер показывает бесконечность, значит, нить накала оборвалась.
  • To call the passing capacitor, the device is set for the largest measurement mode.
  • One probe is connected to any of the contacts, the other to the body.

If everything is in order, the device will show infinity. When the capacitor capacitance is damaged, the charge pierces the case.

DIY microwave repair (in detail)

The kitchen assistant is not so complicated that in case of minor malfunctions, contact the workshop for the repair of microwaves. Repair of the microwave Samsung, Mystery MMW, Whirlpool, LG, Panason and other popular models are not difficult to produce independently. To determine the malfunction and replace the details, there is enough knowledge of the school and the ability to solder.

Design

To make repairs at the home of Panasonic microwaves with your own hands, you need to know the main elements that provide its work. Microwave oven, be it Mystery 2018g; or any other, consists of the following functional blocks:

  • magnetron connected to the wave of the waveguide;
  • transformer;
  • high.voltage fuse;
  • high.voltage diode;
  • capacitor;
  • control unit.

Magnetron is located in the center of the compartment. A transformer consisting of a set of metal core with a coil is placed below. On the right side of it is a board with a capacitor, diode and fuse. The control unit is usually placed next to the installation panel of operating modes.

When the furnace is turned on on the secondary windings of the transformer, 2 voltages appear. 6.3 V and 2 kV.

Low is supplied to the thread of the intensity of the magnetron, and the high voltage, consisting of a diode and condenser, and then on the anode. As a result, there is a microwave radiation used by stoves for warming up and cooking. The power of the microwaves is adjustable using the microwave control unit.

Determination of a malfunction

Each breakdown is accompanied by its symptoms:

  • Something sparkles, cracks and shoots inside the furnace. This phenomenon is observed with the destruction of mica lining, which closes the output of the waveguide into the camera. Also occurs when the protective cap of magnetron.
  • The food placed in the chamber does not heat up. The pallet rotates, the backlight works. The problem arises due to the burning of the high-voltage fuse or the breakdown of the capacitor.
  • The microwave oven does not warm. This is due to low voltage in the mains or loss of emission magnetron.
  • The furnace does not turn on. First, the integrity of the power cord, fuse and the presence of voltage in the outlet are checked. Then the condition of the locking microswitchchers included when the door is closed. If everything is regular. the reason in the oxidation of the contacts of the thermallane placed on the magnetron body.
  • The pallet does not rotate. Cut the coupling connecting the engine shaft with the pallet or the motor is faulty.
  • When working, the oven, in particular Mystery MMW, publishes a loud buzz. A faulty transformer or fan.
  • No commands are executed. Perhaps, due to the high temperature, the contacts of the control unit burned out.
  • Indication or timer is not displayed. The work of the microprocessor is broken. In this case, the repair of the touch control panel should be entrusted to the master.

Dismantling of the microwave

To repair with your own hands, you need to open access to the elements under the casing on the back wall. 6 bolts are unscrewed to remove it with a cross.shaped screwdriver. When extracting elements, it should be borne in mind that they are fixed with hidden locks, so you do not need to waste time searching for screws or bolts. To remove any element, you must click on the corresponding ledge. There may be several mounts, so before the notch you need to make sure that they are all removed.

Before removing the casing, the power cord turns off the outlet.

Since the capacitors retain the charge for a long time, it is necessary to immediately discharge them, crushing the conclusions by a segment of the isolated wire.

Trouble-shooting

Repair the microwave oven with your own hands is better using a functional scheme. It is universal for all furnaces and reflects in sufficient detail all the elements. With your own hands, repair of the microwave of LG can be carried out in accordance with the recommendations below.

Electrical circuit diagram of the microwave oven.

Replacement of fuses

Microwave ovens are equipped with 2 fuses. The first in the glass case is installed at the input of the voltage from the outlet. Integrity is checked visually or ohmmeter. The second, high.voltage, in the tubular case made of plastic. placed near the transformer.

It burns out when the diode or capacitor in the high.voltage chain of magnetron. Do not replace them with “bugs”, as this can lead to fire.

Before installing new fuses, it is useful to analyze the causes of the situation so that the situation does not happen again.

Replacing mica

In the process of warming up and cooking on a mica pasque, drops of fat and pieces of food inevitably fall, which is why sparks and crackle occur in the chamber.

In this case, the magnetron has to work with overload, which leads to failure. Sludge sheets are sold in radiotovar stores, and everyone can cut a plate of the desired size.

If there is no way to replace, then temporarily, after cleaning, the old plate is used, which is installed by the spoiled side inside the waveguide.

Repair of a protective cap

The burning of the cap, accompanied by noise and sincerity, occurs due to old age, or due to the destruction of the mica plate. Therefore, when replacing the lining, it is necessary to check its condition. The part is penny and it changes easily. But you can repair it by simply deploying a cap by 180 °. In a new position, he will last a long time.

Checking a high.voltage diode

To diagnose this part, an ordinary tester is not suitable, since it does not have a sufficient measurement range. The verification can be carried out using an ordinary light bulb by connecting it through the test diode to the 220 in network. If the part is working. the light bulb is not a complete intensity. With bright glow or its absence, the diode is replaced.

Checking capacitors

Capacitors, including high.voltage, are checked by measuring by an ohmmeter of their resistance. If the device shows infinity. everything is in order. With indications of 0 or more ohms. the part is replaced. If, when checking the high.voltage capacitor, the resistance is 1 MOM, then it sets a discharging resistor and it is suitable for use.

Diagnosis of the transformer

The check is made by an ohmmeter, which measure the resistance of the windings. In the primary, depending on the microwave model, it should be in the range of 2. 4.5 Ohms, the resistance of the high.voltage winding is from 140 to 350 Ohms. The norm for the glow winding is the range of values ​​of 3.5. 8 Ohms.

DIY microwave repair (in detail)

The kitchen assistant is not so complicated that in case of minor malfunctions, contact the workshop for the repair of microwaves. Repair of the microwave Samsung, Mystery MMW, Whirlpool, LG, Panason and other popular models are not difficult to produce independently. To determine the malfunction and replace the details, there is enough knowledge of the school and the ability to solder.

Design

To make repairs at the home of Panasonic microwaves with your own hands, you need to know the main elements that provide its work. Microwave oven, be it Mystery 2018g; or any other, consists of the following functional blocks:

  • magnetron connected to the wave of the waveguide;
  • transformer;
  • high.voltage fuse;
  • high.voltage diode;
  • capacitor;
  • control unit.

Magnetron is located in the center of the compartment. A transformer consisting of a set of metal core with a coil is placed below. On the right side of it is a board with a capacitor, diode and fuse. The control unit is usually placed next to the installation panel of operating modes.

When the furnace is turned on on the secondary windings of the transformer, 2 voltages appear. 6.3 V and 2 kV.

Low is supplied to the thread of the intensity of the magnetron, and the high voltage, consisting of a diode and condenser, and then on the anode. As a result, there is a microwave radiation used by furnace for warming up and cooking. The power of the microwaves is adjustable using the microwave control unit.

Determination of a malfunction

Each breakdown is accompanied by its symptoms:

  • Something sparkles, cracks and shoots inside the furnace. This phenomenon is observed with the destruction of mica lining, which closes the output of the waveguide into the camera. Also occurs when the protective cap of magnetron.
  • The food placed in the chamber does not heat up. The pallet rotates, the backlight works. The problem arises due to the burning of the high-voltage fuse or the breakdown of the capacitor.
  • The microwave oven does not warm. This is due to low voltage in the mains or loss of emission magnetron.
  • The furnace does not turn on. First, the integrity of the power cord, fuse and the presence of voltage in the outlet are checked. Then the condition of the locking microswitchchers included when the door is closed. If everything is regular. the reason in the oxidation of the contacts of the thermallane placed on the magnetron body.
  • The pallet does not rotate. Cut the coupling connecting the engine shaft with the pallet or the motor is faulty.
  • When working, the oven, in particular Mystery MMW, publishes a loud buzz. A faulty transformer or fan.
  • No commands are executed. Perhaps, due to the high temperature, the contacts of the control unit burned out.
  • Indication or timer is not displayed. The work of the microprocessor is broken. In this case, the repair of the touch control panel should be entrusted to the master.

Dismantling of the microwave

To repair with your own hands, you need to open access to the elements under the casing on the back wall. 6 bolts are unscrewed to remove it with a cross.shaped screwdriver. When extracting elements, it should be borne in mind that they are fixed with hidden locks, so you do not need to waste time searching for screws or bolts. To remove any element, you must click on the corresponding ledge. There may be several mounts, so you need to make sure that they are all removed before the notch.

Before removing the casing, the power cord turns off the outlet.

Since the capacitors retain the charge for a long time, it is necessary to immediately discharge them, crushing the conclusions by a segment of the isolated wire.

disassemble, door, microwave, rolsen

Trouble-shooting

Repair the microwave oven with your own hands is better using a functional scheme. It is universal for all furnaces and reflects in sufficient detail all the elements. With your own hands, repair of the microwave of LG can be carried out in accordance with the recommendations below.

Electrical circuit diagram of the microwave oven.

Replacement of fuses

Microwave ovens are equipped with 2 fuses. The first in the glass case is installed at the input of the voltage from the outlet. Integrity is checked visually or ohmmeter. The second, high.voltage, in the tubular case made of plastic. placed near the transformer.

It burns out when the diode or capacitor in the high.voltage chain of magnetron. Do not replace them with “bugs”, as this can lead to fire.

Before installing new fuses, it is useful to analyze the causes of the situation so that the situation does not happen again.

Replacing mica

In the process of warming up and cooking on a mica pasque, drops of fat and pieces of food inevitably fall, which is why sparks and crackle occur in the chamber.

In this case, the magnetron has to work with overload, which leads to failure. Sludge sheets are sold in radiotovar stores, and everyone can cut a plate of the desired size.

If there is no way to replace, then temporarily, after cleaning, the old plate is used, which is installed by the spoiled side inside the waveguide.

Repair of a protective cap

The burning of the cap, accompanied by noise and sincerity, occurs due to old age, or due to the destruction of the mica plate. Therefore, when replacing the lining, it is necessary to check its condition. The part is penny and it changes easily. But you can repair it by simply deploying a cap by 180 °. In a new position, he will last a long time.

Checking a high.voltage diode

To diagnose this part, an ordinary tester is not suitable, since it does not have a sufficient measurement range. The verification can be carried out using an ordinary light bulb by connecting it through the test diode to the 220 in network. If the part is working. the light bulb is not a complete intensity. With bright glow or its absence, the diode is replaced.

Checking capacitors

Capacitors, including high.voltage, are checked by measuring by an ohmmeter of their resistance. If the device shows infinity. everything is in order. With indications of 0 or more ohms. the part is replaced. If, when checking the high.voltage capacitor, the resistance is 1 MOM, then it sets a discharging resistor and it is suitable for use.

Diagnosis of the transformer

The check is made by an ohmmeter, which measure the resistance of the windings. In the primary, depending on the microwave model, it should be in the range of 2. 4.5 Ohms, the resistance of the high.voltage winding is from 140 to 350 Ohms. The norm for the glow winding is the range of values ​​of 3.5. 8 Ohms.

How to disassemble the door at the microwave

The hook broke at the door of the microwave

How to disassemble the door of the microwave oven

First remove the internal frame then the front panel

The rail with hooks can be bought here Veles t.2935600

When removing the front panel, be careful, it can

Reiki with hooks are different in size like a hook

To date, a person has many models of household appliances at the disposal, which greatly facilitates life. Refrigerator, washing machine, microwave oven. all of them are designed so that we are less distracted by household trifles and problems.

But the presence of such equipment in the house has a certain responsibility for its safety and normal performance. Therefore, during the operation of the Panasonic, Samsung or LG technique, you need to follow the instructions, and in the case of breakdowns, approach the repair, understanding the seriousness of the procedure.

How to disassemble the microwave at home: step.by.step instructions and practical tips

Each model has its own characteristics. If a cross.shaped screwdriver needs one device, then for another it may not fit.

First, fasteners are turned off from the side and rear surfaces of the technique. Remove the casing of the device, moving it back and lifting it up. Dismantle the power cord, disconnecting the conclusions from the filter.

Then move on to the removal of the front panel and control unit. To do this, carefully disconnect the cable from the control module. Remove the fasteners and plastic fasteners that fixes the module and take out the control panel. After that, the induction panel is removed.

Dismantling doors. It is opened and removed by a restrictive plate using a screwdriver with a flat spitz. All actions are performed carefully so as not to damage the rubber seal. Then the door is raised and removed. During the reverse assembly, the door is installed parallel to the frame, without gaps. If necessary, set it up.

To extract magnetron, turn off the cables from the transformer and capacitor. Remove the fasteners holding them on the frame. The assembly is disconnected until the tip comes out until the end of the waveguide. After the magnetron is installed in place, the radiation level is checked. It should be no higher than 5 MW/cm².

Then the obstruction filter is removed, disconnecting the power harnesses from it and removing the fasteners, which fixes the ground wire to the rear wall. Press on two plastic latches and take it out. After that, the power harnesses are disconnected from the container, the screw is unscrewed, the grounding wire of the high.voltage diode is fixed. At the next stage, tans from the current and fan relay are unhooked. Remove fasteners and remove the fan.

If you need to get the backlight lamp, the wires are disconnected from it and the fastener is removed that fixes the duct to the magnetron. Pressing the latches of the duct, extract an indication panel.

Reference. To extract parts from the microwave, they act according to one principle: turn off the wires, remove the fasteners and take out the part.

The assembly of the equipment is carried out in the reverse order. To simplify the process, the analysis of the device is better to record on the camera or photograph. Gathering a microwave, they act very carefully so as not to damage it and not lead to a leakage of microwave radiation.

Parsing the microwave doors

It happens that malfunctions in the work of the microwave occur due to the door. Regardless of the design model have many common points. Doors have a puff structure, which includes a supporting (metal), protective and external (decorative) layer. They differ from each other by the number of layers, the material of manufacture and the method of fastening.

Consider how to disassemble the microwave door:

Possible malfunctions

Microwaves from all brands (Panasonic, Samsung or LG) have the same structure. They consist of:

  • power transformer;
  • windings;
  • capacitor;
  • diodes (high.voltage and safety);
  • initial winding;
  • magnetron.

Heating occurs due to the last element. With any malfunctions, the problem is first diagnosed. To do this, sequentially check all the details that can be divided into three main blocks. This is a warm.up camera, a waveguide and a magnetron transformer.

The extreme unit provides a timely transition of electric energy that occurs as a result of the exposure of alternating current from one type of voltage to another. The frequency of microwave rays remains unchanged. Before starting work, be sure to turn off the household device from the network.

Read also: How to make a cartridge for a mini drill

There are many reasons for the release of the microwave from the working regime, among them:

  • Insufficient voltage of electric current.
  • Overloading the mains.
  • Door malfunction, due to which there is no heating of food to the fullest.
  • The inattention of the owner.
  • Incorrect operation.
  • Physical deterioration.
  • Lack of timely replacement of details that failed.

How to disassemble the microwave: is it possible to disassemble the magnetron of the microwave oven

To fix the microwave oven, knowledge is needed in the field of electrical and radio engineering, as well as tools to analyze it. With independent repair, it is important to observe safety regulations. In case of uncertainty in your abilities, it is better to contact specialists.

Is it possible to disassemble the microwave

The microwave oven consists of a power transformer, winding, capacitor, diodes (high.voltage and safety), initial winding and magnetron, which provides heating. If in her work there is a malfunction, first the problem is diagnosed, checking sequentially all the details.

They are divided into three blocks:

To do this, disassemble the microwave oven. It is not recommended to do this yourself. Without knowledge and understanding of the principle of operation of technology, this will not give the desired result and will lead to the final breakdown of the device.

If the user decided to disassemble and repair a household device with his own hands, he must remember about compliance with safety regulations. First, the microwave oven is disconnected from the electric network and the voltage is removed from the high-voltage modules using an electrical protection tool.

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How to disassemble the microwave at home: step.by.step instructions and practical tips

Each model has its own characteristics. If a cross.shaped screwdriver needs one device, then for another it may not fit.

First, fasteners are turned off from the side and rear surfaces of the technique. Remove the casing of the device, moving it back and lifting it up. Dismantle the power cord, disconnecting the conclusions from the filter.

Then move on to the removal of the front panel and control unit. To do this, carefully disconnect the cable from the control module. Remove the fasteners and plastic fasteners that fixes the module and take out the control panel. After that, the induction panel is removed.

Dismantling doors. It is opened and removed by a restrictive plate using a screwdriver with a flat spitz. All actions are performed carefully so as not to damage the rubber seal. Then the door is raised and removed. During the reverse assembly, the door is installed parallel to the frame, without gaps. If necessary, set it up.

To extract magnetron, turn off the cables from the transformer and capacitor. Remove the fasteners holding them on the frame. The assembly is disconnected until the tip comes out until the end of the waveguide. After the magnetron is installed in place, the radiation level is checked. It should be no higher than 5 MW/cm².

Then the obstruction filter is removed, disconnecting the power harnesses from it and removing the fasteners, which fixes the ground wire to the rear wall. Press on two plastic latches and take it out.

After that, the power harnesses are disconnected from the container, the screw is unscrewed, the grounding wire of the high.voltage diode is fixed. At the next stage, tans from the current and fan relay are unhooked.

Remove fasteners and remove the fan.

If you need to get the backlight lamp, the wires are disconnected from it and the fastener is removed that fixes the duct to the magnetron. Pressing the latches of the duct, extract an indication panel.

Reference. To extract parts from the microwave, they act according to one principle: turn off the wires, remove the fasteners and take out the part.

The assembly of the equipment is carried out in the reverse order. To simplify the process, the analysis of the device is better to record on the camera or photograph. Gathering a microwave, they act very carefully so as not to damage it and not lead to a leakage of microwave radiation.

Parsing the microwave doors

It happens that malfunctions in the work of the microwave occur due to the door. Regardless of the design model have many common points. Doors have a puff structure, which includes a supporting (metal), protective and external (decorative) layer. They differ from each other by the number of layers, the material of manufacture and the method of fastening.

Consider how to disassemble the microwave door:

  • First, tools are prepared: a knife and 2 screwdrivers with a wide flat blade.
  • The process begins with disconnecting the framework of the sealing.
  • Then the external frame is separated, which is recorded by screws or latches.
  • If the door was required to be cleaned of pollution, the analysis process is completed on this.
  • At the next stage, it is neat, so as not to break, the glass is separated from the plastic finish.
  • When necessary, a film is removed from the inside of the door, which is fixed on a metal base.

How to disassemble the magnetron microwave and replace it yourself

Most often, the magnetron of the microwave is not amenable to repair. If the part has worn out, its depressurization or a break in the filament occurred, it is changed to a new. Когда выходит из строя колпачок на антенне или проходной конденсатор, их меняют, если имеются инструменты.

Before proceeding with the analysis and repair, the system is checked for performance. First pay attention to the power source. Weak voltage causes failures in the operation of the device.

If it meets the norm, the microwave is disassembled:

Instructions how to disassemble the microwave

To date, a person has many models of household appliances at the disposal, which greatly facilitates life. Refrigerator, washing machine, microwave oven. all of them are designed so that we are less distracted by household trifles and problems.

But the presence of such equipment in the house has a certain responsibility for its safety and normal performance. Therefore, during the operation of the Panasonic, Samsung or LG technique, you need to follow the instructions, and in the case of breakdowns, approach the repair, understanding the seriousness of the procedure.

What is microwave

The microwave oven is an electric device that allows you to quickly heat, defrost, prepare any product. The equipment affects the object, more precisely on the molecules, of which it consists of the entire volume. The discovery, which served as the impetus for the creation of microwaves, was discovered in 1942.

And already in 1945, an inventor named Spencer began to use microwave rays in order to cook food. 1947 was marked by the appearance of the first microwave ovens, which were most often installed in military hospitals and dining rooms. They were distinguished by rather impressive dimensions (height is more than 1 meter, weight about 350 kg).

Operating principle

Food products contain many different components, among them water, fat, mineral salts and sugar. The heating effect depends on the dipole molecules. These are particles that have a positive and negative charge at the same time. A similar structure is characteristic of a molecule, water, sugar or fat.

When the microwave is included in the network, all of them, thanks to the electric field, are built in a certain order, that is, in one side, plus charges, and in the other minus. When changing polarity, they change places. Because of this “jumping” between dipole molecules, the friction force appears, which causes an increase in temperature.

The heating speed depends on the frequency of microwave rays. Most often manufacturers (Panasonic, Samsung or LG) stop at an indicator of 2450 MHz. The process of preparation in the microwave consists of two stages: penetration of rays by 2-3 cm inside food, distribution of the occurrence of heat further.

Therefore, when choosing the duration of warming up, the size of the processed product should be taken into account. Big should be cooked slowly at low power, and vice versa. Liquid substances require additional manipulations, for example, storage. Thus, the dish will prepare faster, but at the same time does not lose its taste.

Possible malfunctions

Microwaves from all brands (Panasonic, Samsung or LG) have the same structure. They consist of:

  • power transformer;
  • windings;
  • capacitor;
  • diodes (high.voltage and safety);
  • initial winding;
  • magnetron.

Heating occurs due to the last element. With any malfunctions, the problem is first diagnosed. To do this, sequentially check all the details that can be divided into three main blocks. This is a warm.up camera, a waveguide and a magnetron transformer.

The extreme unit provides a timely transition of electric energy that occurs as a result of the exposure of alternating current from one type of voltage to another. The frequency of microwave rays remains unchanged. Before starting work, be sure to turn off the household device from the network.

There are many reasons for the release of the microwave from the working regime, among them:

  • Insufficient voltage of electric current.
  • Overloading the mains.
  • Door malfunction, due to which there is no heating of food to the fullest.
  • The inattention of the owner.
  • Incorrect operation.
  • Physical deterioration.
  • Lack of timely replacement of details that failed.

How to disassemble the microwave Samsung (LG, Panasonic, Daewoo)

It is not recommended to take on independent microwave repair. Without appropriate knowledge and skills, there will be no benefit from it. Most likely a household device will finally fail.

If there is no way to contact professionals, they act according to the following instructions:

  • Disable the household device from the network.
  • Remove its back cover, which is attached by means of bolts.
  • Examine the fuses (two of them). If the thread of the intensity inside them burned out, then the way out of the situation will only be a complete replacement.
  • To evaluate the condition of the microdigator remove the lower microwave cover.
  • To inspect the magnetron, you will have to eliminate obstacles in the form of a transformer and duct.
  • The control panel is disconnected by removing the screws.

The microwave should be assembled neatly, one movement can cause a leakage of microwave radiation, which leads not only to the complete breakdown of the equipment, but also to health problems.

In some cases, violations in the operation of the device are associated with its door. Disassemble the door of the microwave is easy. Despite a large number of variations of its design, there are many general points. All doors have a “puff” structure. The number of these layers, manufacturing material and the method of attaching them are considered the main differences.

Samsung microwave (LG, Panasonic) has the following “layers”:

How to disassemble the microwave door? A knife and two screwdrivers are required, characterized by a wide flat blade. To begin with, we separate the frame of the seal, after the line of decorative finishes comes, it is usually attached by means of screws or latches.

Instructions how to disassemble the microwave

To date, a person has many models of household appliances at the disposal, which greatly facilitates life. Refrigerator, washing machine, microwave oven. all of them are designed so that we are less distracted by household trifles and problems.

But the presence of such equipment in the house has a certain responsibility for its safety and normal performance. Therefore, during the operation of the Panasonic, Samsung or LG technique, you need to follow the instructions, and in the case of breakdowns, approach the repair, understanding the seriousness of the procedure.

What is microwave

The microwave oven is an electric device that allows you to quickly heat, defrost, prepare any product. The equipment affects the object, more precisely on the molecules, of which it consists of the entire volume. The discovery, which served as the impetus for the creation of microwaves, was discovered in 1942.

And already in 1945, an inventor named Spencer began to use microwave rays in order to cook food. 1947 was marked by the appearance of the first microwave ovens, which were most often installed in military hospitals and dining rooms. They were distinguished by rather impressive dimensions (height is more than 1 meter, weight about 350 kg).

Operating principle

Food products contain many different components, among them water, fat, mineral salts and sugar. The heating effect depends on the dipole molecules. These are particles that have a positive and negative charge at the same time. A similar structure is characteristic of a molecule, water, sugar or fat.

When the microwave is included in the network, all of them, thanks to the electric field, are built in a certain order, that is, in one side, plus charges, and in the other minus. When changing polarity, they change places. Because of this “jumping” between dipole molecules, the friction force appears, which causes an increase in temperature.

The heating speed depends on the frequency of microwave rays. Most often manufacturers (Panasonic, Samsung or LG) dwell on an indicator of 2450 MHz. The process of preparation in the microwave consists of two stages: penetration of rays by 2-3 cm inside food, distribution of the occurrence of heat further.

Therefore, when choosing the duration of warming up, the size of the processed product should be taken into account. Big should be cooked slowly at low power, and vice versa. Liquid substances require additional manipulations, for example, storage. Thus, the dish will prepare faster, but at the same time does not lose its taste.

Possible malfunctions

Microwaves from all brands (Panasonic, Samsung or LG) have the same structure. They consist of:

  • power transformer;
  • windings;
  • capacitor;
  • diodes (high.voltage and safety);
  • initial winding;
  • magnetron.

Heating occurs due to the last element. With any malfunctions, the problem is first diagnosed. To do this, sequentially check all the details that can be divided into three main blocks. This is a warm.up camera, a waveguide and a magnetron transformer.

The extreme unit provides a timely transition of electric energy that occurs as a result of the exposure of alternating current from one type of voltage to another. The frequency of microwave rays remains unchanged. Before starting work, be sure to turn off the household device from the network.

There are many reasons for the release of the microwave from the working regime, among them:

  • Insufficient voltage of electric current.
  • Overloading the mains.
  • Door malfunction, due to which there is no heating of food to the fullest.
  • The inattention of the owner.
  • Incorrect operation.
  • Physical deterioration.
  • Lack of timely replacement of details that failed.

How to disassemble the microwave Samsung (LG, Panasonic, Daewoo)

It is not recommended to take on independent microwave repair. Without appropriate knowledge and skills, there will be no benefit from it. Most likely a household device will finally fail.

If there is no way to contact professionals, they act according to the following instructions:

  • Disable the household device from the network.
  • Remove its back cover, which is attached by means of bolts.
  • Examine the fuses (two of them). If the thread of the intensity inside them burned out, then the way out of the situation will only be a complete replacement.
  • To evaluate the condition of the microdigator remove the lower microwave cover.
  • To inspect the magnetron, you will have to eliminate obstacles in the form of a transformer and duct.
  • The control panel is disconnected by removing the screws.

The microwave should be assembled neatly, one movement can cause a leakage of microwave radiation, which leads not only to the complete breakdown of the equipment, but also to health problems.

In some cases, violations in the operation of the device are associated with its door. Disassemble the door of the microwave is easy. Despite a large number of variations of its design, there are many general points. All doors have a “puff” structure. The number of these layers, manufacturing material and the method of attaching them are considered the main differences.

Samsung microwave (LG, Panasonic) has the following “layers”:

How to disassemble the microwave door? A knife and two screwdrivers are required, characterized by a wide flat blade. To begin with, we separate the frame of the seal, after the line of decorative finishes comes, it is usually attached by means of screws or latches.

How to disassemble the door at the microwave

To date, a person has many models of household appliances at the disposal, which greatly facilitates life.

Refrigerator, washing machine, microwave oven. all of them are designed so that we are less distracted by household trifles and problems.

But the presence of such equipment in the house has a certain responsibility for its safety and normal performance. Therefore, during the operation of the Panasonic, Samsung or LG technique, you need to follow the instructions, and in the case of breakdowns, approach the repair, understanding the seriousness of the procedure.

What is microwave

The microwave oven is an electric device that allows you to quickly heat, defrost, prepare any product. The equipment affects the object, more precisely on the molecules, of which it consists of the entire volume. The discovery, which served as the impetus for the creation of microwaves, was discovered in 1942.

And already in 1945, an inventor named Spencer began to use microwave rays in order to cook food. 1947 was marked by the appearance of the first microwave ovens, which were most often installed in military hospitals and dining rooms. They were distinguished by rather impressive dimensions (height is more than 1 meter, weight about 350 kg).

Operating principle

Food products contain many different components, among them water, fat, mineral salts and sugar. The heating effect depends on the dipole molecules. These are particles that have a positive and negative charge at the same time. A similar structure is characteristic of a molecule, water, sugar or fat.

When the microwave is included in the network, all of them, thanks to the electric field, are built in a certain order, that is, in one side, plus charges, and in the other minus. When changing polarity, they change places. Because of this “jumping” between dipole molecules, the friction force appears, which causes an increase in temperature.

The heating speed depends on the frequency of microwave rays. Most often manufacturers (Panasonic, Samsung or LG) dwell on an indicator of 2450 MHz. The process of preparation in the microwave consists of two stages: penetration of rays by 2-3 cm inside food, distribution of the occurrence of heat further.

Therefore, when choosing the duration of warming up, the size of the processed product should be taken into account. Big should be cooked slowly at low power, and vice versa. Liquid substances require additional manipulations, for example, storage. Thus, the dish will prepare faster, but at the same time does not lose its taste.

Possible malfunctions

Microwaves from all brands (Panasonic, Samsung or LG) have the same structure. They consist of:

  • power transformer;
  • windings;
  • capacitor;
  • diodes (high.voltage and safety);
  • initial winding;
  • magnetron.

Heating occurs due to the last element. With any malfunctions, the problem is first diagnosed. To do this, sequentially check all the details that can be divided into three main blocks. This is a warm.up camera, a waveguide and a magnetron transformer.

The extreme unit provides a timely transition of electric energy that occurs as a result of the exposure of alternating current from one type of voltage to another. The frequency of microwave rays remains unchanged. Before starting work, be sure to turn off the household device from the network.

There are many reasons for the release of the microwave from the working regime, among them:

  • Insufficient voltage of electric current.
  • Overloading the mains.
  • Door malfunction, due to which there is no heating of food to the fullest.
  • The inattention of the owner.
  • Incorrect operation.
  • Physical deterioration.
  • Lack of timely replacement of details that failed.

At what temperature the gold melts 585

How to disassemble the microwave Samsung (LG, Panasonic, Daewoo)

It is not recommended to take on independent microwave repair. Without appropriate knowledge and skills, there will be no benefit from it. Most likely a household device will finally fail.

If there is no way to contact professionals, they act according to the following instructions:

  • Disable the household device from the network.
  • Remove its back cover, which is attached by means of bolts.
  • Examine the fuses (two of them). If the thread of the intensity inside them burned out, then the way out of the situation will only be a complete replacement.
  • To evaluate the condition of the microdigator remove the lower microwave cover.
  • To inspect the magnetron, you will have to eliminate obstacles in the form of a transformer and duct.
  • The control panel is disconnected by removing the screws.

The microwave should be assembled neatly, one movement can cause a leakage of microwave radiation, which leads not only to the complete breakdown of the equipment, but also to health problems.

In some cases, violations in the operation of the device are associated with its door. Disassemble the door of the microwave is easy. Despite a large number of variations of its design, there are many general points. All doors have a “puff” structure. The number of these layers, manufacturing material and the method of attaching them are considered the main differences.

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