However, this technique also fails. If the warranty period has passed, you can do the repairs yourself. To do this, some masters only need to know the internal structure of the equipment.

One of the most common questions asked by owners of the equipment described is why the microwave does not heat. In this case, it can work, the light inside lights up, and the turntable moves as usual. The reason may be the failure of some parts, which can sometimes be repaired, and sometimes simply replaced.

Solving simple problems

If you have a microwave in your home, you can easily repair such equipment yourself. Sometimes low mains voltage is mistaken for problems. Even if there is a slight deviation, it can negatively affect the equipment's performance and heating capabilities. In this case, the pan usually heats up, but the food in the center remains cold.

To solve this issue, experts advise installing an uninterruptible power supply. Even the most modern microwave may require maintenance. You can repair such equipment yourself if you understand the causes of the breakdown. Sometimes users encounter the problem of network overload; in this case, several powerful devices connected to the same outlet can operate simultaneously. The issue can be resolved by connecting the consumer to a separate outlet.

If you notice that the microwave does not close, this may indicate that the latches are broken. In order for the structure to be airtight and heat well, it is necessary to replace the locks. Sometimes housewives get confused with the regimes. If before this you set the microwave to defrost, and then forgot to switch it to heating, then the food may heat up, but to a certain temperature, which is not enough.

At the same time, you should not decide the question of how to repair the equipment. If none of the above options suit your case, then the problem may be a broken capacitor or high-voltage diode. Sometimes problems arise with the magnetron, in this case it is also possible to correct the situation.

More complex breakdowns

Microwave problems may be more complex than those described above. Before you move on to troubleshooting problems, you need to disconnect the equipment from the network and find the instructions, after reading which you can find the circuit elements that need to be checked.

Solving the fuse problem

If the microwave does not work, the first thing you should check is the fuse. This must be done immediately after removing the cover. If it has not changed color and the thread has not burned out, then you need to leave it. Otherwise, the fuse is replaced with a new one.

When purchasing this part, you need to take an old one from home so that you can compare. Experts do not recommend using “bugs” made of thin wire, which do not always help save the situation. In this case, there is a high probability of fire, while the cost of a normal fuse is no more than 50 rubles. If after installing this unit the problem is not resolved, then you should consider resolving the issue with the capacitor.

When there is a problem with the capacitor

If the microwave does not heat, but works, you can understand what to do by reading the information presented below. In addition to the described problem, buzzing and extraneous noise may be added. In this case, quite often the problem is expressed in the capacitor.

The functionality of this element is quite easy to check. It is important to use an ohmmeter that is connected to the part. If the meter needle deviates, this indicates that the capacitor is in order. Otherwise, you can be sure that the node has failed. The capacitor must be discharged before testing or replacing.

High voltage diode

A microwave, which you can easily repair with your own hands, sometimes encounters a problem that is expressed in a high-voltage diode. Its testing is usually not carried out, because the work is complex. It will be easier to purchase a new product, making sure that the problem is expressed in it.

A fault caused by a diode can be checked using a high-voltage capacitor. When checking, it should not heat up. There are also additional signs, expressed in the fact that when the microwave is operating, a buzzing sound is heard, and when a certain mode is turned on, the equipment hums somewhat louder.

Magnetron problem

A microwave, which you can repair yourself by checking several components in the equipment, sometimes faces the problem of magnetron failure. When all the elements listed above have been checked, the performance of the magnetron can be analyzed. In this case, the microwave should not heat, because the purpose of the unit is to generate an electric field, which is responsible for heating the food.

So, you noticed that the microwave does not heat, but it works. What to do? When you hear an increased noise during operation, you should visually inspect the part for cracks and carbon deposits. If no defects were found, then you should check with an ohmmeter. In this case, the housing should not communicate with the pass-through capacitor. If the magnetron burns out, it is replaced with a new one, but it is important to choose one that has identical technical characteristics and dimensions.

Failure due to improper use

If the microwave does not work, this can be caused by improper operation. As practice shows, the main reasons why a microwave does not heat are:

  • wear of spare parts;
  • heating food in metal containers;
  • heating raw eggs;
  • turning on the equipment in idle mode;
  • heating liquids in closed containers.

Mica gasket

If a breakdown of the housing occurs in the area of ​​the mica gasket, this may be indicated by the formation of a spark that interferes with the normal operation of the device. To prevent this from happening, the waveguide is covered with mica fabric. This material is flexible and soft, inexpensive, and can be purchased in small pieces.

The protective gasket may fail during cooking. When oil and grease, as well as other substances, drop onto fabric, a conduction bridge occurs. In this case, an arc is formed between the mica fabric and the walls of the waveguide. If lightning and thunder occur, this indicates that the furnace will soon have to be repaired.

Why doesn't the oven turn on?

Sometimes it happens that the microwave does not turn on. The problem may be a cooling fan that has simply stopped working. The power relay may break down, and sometimes the ventilation hole becomes clogged. The solution may be to replace the element with a new one.

Do-it-yourself microwave oven repair is described in detail in the article. These instructions will help you understand what to do if the display does not work. This may result in damage to the processor, which should be replaced. Sometimes the screen itself fails. If you notice that the control panel does not work, but the operating time of the device is still reflected, the tracks that conduct current may be damaged. The touch panel can only be repaired by completely replacing the elements.

When you notice that the plate inside the device is not spinning smoothly enough, the grooves of the rollers may become dirty. Sometimes a broken engine leads to such consequences. At the first stage, it is necessary to clean the roller grooves from contamination; if this does not help, then you will need to change the motor.

Microwave oven disassembly instructions

If the microwave does not turn on, it should be disassembled. At the first stage, the casing is dismantled. To do this, disconnect the power cord from the oven socket. Next, unscrew the screws that are located on the side and rear walls. In order to remove the casing, it should be moved back and then lifted slightly. To dismantle the power cord, at the first stage the casing is removed, the two terminals are disconnected, and the grounding screw of the middle wire is unscrewed. The high-voltage capacitor must be discharged before starting this type of work. For this you need to use a screwdriver with a dielectric handle.

If you are faced with the question of how to disassemble a microwave oven, then a task may arise that involves dismantling the front panel. In this case, you will also remove the control unit. The wire is disconnected from it, the grounding screws are unscrewed, and then the front panel can be removed. The technician should disconnect the fastening latch, and then unscrew the screw from the control unit that secures the unit to the front panel. Then the display panel is removed. Connectors and wires must be disconnected with the utmost care. Do not pull the wires too hard.

How to remove the door

Repairing a microwave oven with your own hands was described in detail above, however, to achieve a positive result, it is also important to know how to remove the door. It should first be opened, and then the restriction plate should be removed. To do this, you need to use a flat-head screwdriver. It is important to ensure that the seal is not damaged.

The door rises and then is removed. Once you put it back, it is important to make sure that the oven is working properly and properly. You need to make sure that there is no microwave leakage. A probe should be used for this. The radiation level should not be higher than 4 mW/cm2.

Conclusion

If you notice that your microwave is not spinning, the problem may be with the magnetron. To begin with, it is dismantled by disconnecting the wires from the capacitor and transformer. Next, the mounting screws that hold the waveguide and magnetron are unscrewed. In the last step, the magnetron assembly must be disconnected until the tip comes out of the waveguide. The design of a microwave oven is not that complicated, so most likely you can do the repairs yourself.