Repair of microwave ovens with own hands. Microwave repair LG

Nowadays there are microwave ovens in almost every house. At the same time, there are a lot of models on the market. In general, microwave designs are very similar, but there are differences. Thus, each manufacturer has its own weaknesses. In order to start repairing microwave ovens with your own hands, you need to make a complete diagnosis. As a result, you need to get exhaustive information about the breakdown, and only then take any measures.

Microwave repair "Elgi"

This company is considered famous. At the same time, it produces a quality product, and it breaks rarely. If we consider specifically microwave, then most often the problem is a vacuum lamp. This part is called a magnetron. The main responsibility of this element is the creation of radiation. Thanks to this, it is possible to influence the water that is in the food. In this case, it is important to note that the magnetrons are produced at different frequencies. In order to verify its operability, the part should be removed. Begins repairing the microwave with their own hands (LG in this case) with the unscrewing of the back cover of the model.

Then you can see a small cap. In some models it is covered from above by a casing. In this situation, first he is removed, and then - the cap. As a result, you can see the flange, which is located next to the magnets. In many cases, it directly connects to the radiator. To finish the repair of the microwave with your own hands (LG), you can get the flange by unscrewing the magnets. After that you will see a magnetron, which looks like a regular box. It is fixed to the body of a microwave oven on small fixators, which must be turned aside to open. Thus, the magnetron can be safely removed for replacement.

Magnetron replacement

Before you start repairing microwave ovens yourself, you must always disconnect the device. In order to correctly implement the replacement of the magnetron, first of all you should familiarize yourself with its modification. As a rule, the labeling of this element is located on the side panel. Before buying a new magnetron, it's best to assess the wear and tear of the device. In this case, it is necessary to look at the condition of the housing.

It is important to check the integrity of the filter that is inside. This can be done only by unscrewing the bolts on the side panel. The filter itself is a disk of small diameter. If the microwave oven is used improperly, it may be damaged. In this case, it is most advisable to try to replace it, rather than completely magnetron. If, however, the whole mechanism is damaged, it is necessary to remove the microwave rear cover again to install it. After that, it is important to properly install the magnetron for fixation. This can be done very simply by looking at the markings. In the long run, it must be on the right side. In this case, the latches will fit into their place, and it will be possible to re-screw the flange. After this you should make a test switch on the unit.

Repair of microwave "Samsung"

Many models of this company suffer from the schemes that the Samsung microwave oven has. Repairs with their own hands must be done only after the device is de-energized. It is important to note that such failures occur most often due to voltage fluctuations in the network. To understand this issue, you should familiarize yourself with the structure of the microwave circuit.

It consists of the managerial and executive parts. The first system is represented in the device in the form of a microcontroller. Its main task is programming. It is with the help of the microcontroller that the display of the model perceives signals.

He also controls the touch panel. Thus, the circuit malfunction is very easy to recognize. In some cases, the microcontroller only partially fails. In such a situation, the information on the display can be displayed, but the touch panel will not work. Also, everything can turn out the other way around. All this indicates that the buffer elements of the circuit are violated. In some cases, they are called transistors.

Changing the circuit

In many models, the circuit is under a magnetron. In order to start repairing the microwave with your own hands ("Samsung"), you need to get to it by removing the back cover of the device. You can do this by simply unscrewing four nuts. Next, a person will immediately see the scheme, which is attached to the sides on the latches. In order to inspect the microcontroller completely, it is not necessary to remove it. It is enough just to disconnect it from the circuit.

For this purpose, the plate must be rotated 90 degrees clockwise. As a result, the latch will be removed and the microcontroller will be freed. First you should inspect this element. To do this, check the integrity of the antenna, which is located in the upper part. Under it there is a winding, which can also suffer from prolonged use of the microwave oven. If it has dark spots, the problem is clearly the radiator. This is due to the fact that it went out of order, and as a result was unable to cool this element.

Thus, the temperature during operation increased sharply, and the winding could not stand it. If everything is complete, but the device does not work, the microcontroller connector is checked last. In this case, you need to evaluate the stiffness of its connection to the wire that leads to the circuit. After that, the element is set to its original position. If the microwave does not work, you should completely change the microcontroller.

How to repair a microwave oven "Panasonic"?

In some cases, owners of Panasonic microwave ovens may encounter certain problems with the fan, as well as with the magnetron. In case of a breakdown, a person, as a rule, hears an uncharacteristic sound for the device. Also, a clear sign of a malfunction of the model is the increased glow inside the camera. In this case, sparks may form, and in this case, the repair of microwaves with their own hands must begin with the replacement of the fan.

How do I clean the fan?

When repairing the microwave oven with your own hands ("Panasonic"), you need to make sure that the device is de-energized. Fans in many models are mounted near a high-voltage transformer. In order to get to it, you need to disconnect the capacitor. You can do this by removing the back panel of the microwave. After that, inspect the magnetron, next to which is a high-voltage transformer.

In order to remove it, you will need a standard set of screwdrivers. Lower clamps open without tools. To unscrew the upper screws, you need a Phillips screwdriver. By removing the high-voltage transformer, you can see the fan. First of all, its contamination should be assessed. In some cases, it is unable to perform its functions due to accumulated dust. Having completely cleaned the fan blades, you must reassemble everything and restart the device.

Replacing the cooler in a microwave oven

If the cleaning of the fan does not help, the repair of the microwaves with one's own hands can be completed by replacing the cooler. Pick it in any service center "Panasonic". It is important to report the microwave model. After this, once again unscrew the high-voltage transformer and remove the fan.

In many models "Panasonic" it is attached to the corners on the screws. After replacing the cooler, it should be scrolled by hand. If the motion of the blades is not hindered, you can safely install a high-voltage transformer and screw the rear cover of the microwave.

Problems with Daewoo models

In general, the "Daewoo" microwave ovens are of good quality. However, in doing so, they have standard problems with the magnetron. In addition, high-voltage capacitors can break down. In this case, the microwave oven refuses to turn on. Among other things, the owner may have some problems with the door, but this is due to weak fasteners. In this case, you can try to repair the microwave "Daewoo" with your hands.

Door Repair

When the door breaks, the microwave oven, as a rule, does not turn on. This is due to the fact that the door does not fit securely, as a result, the sensor does not work, and the model can not be controlled . In this case, the repair of the microwave door with your own hands should begin with a check of the latch. To do this, you must first make a visual inspection.

If the door parts are intact and not damaged, it is necessary to check the latch for the strength of the contact. To do this, you need to take it and try to shake it. As a result, it should not deviate. If the part is blurred, it should be twisted, and in order to do this, you will need a screwdriver and an awl. First of all, the screws from the top and bottom are loosened. Further under the latch there is a small spring.

When it loses its stiffness, the door does not fit well with the microwave. You can check the spring only if the part is reachable and inspected. This will help a simple awl, and the door from the top edge is pushed and stretches down. As a result, the spring should easily pop out.

Loop replacement

If, after replacing the latch, the problem with the door is not solved, repairing the microwave by yourself (Daewoo) can be delayed. First you need to check the hinges. For this, prepare an awl. It is best to start from the top. To check the hinge, pull the central axis of the door upwards. After that, you can inspect the parts as a whole.

If there are no cracks, it is necessary to clean the hole and proceed to the inspection of the lower element. When there is a deformation of the door, the entire loop will have to be completely changed. You can buy this item in the service center. It is important when replacing the element, do not damage the inner covering of the door and work with an awl neatly.