Microwave does not heat

A microwave oven is one of the household appliances whose malfunctions can cause serious problems due to high voltage. If you find that your microwave does not heat, you can try to diagnose the cause yourself. A prerequisite for this will be the possession of knowledge and skills in the field of electronics. In another case, you should consult a specialist.

The microwave turns the plate, but does not heat

In this case, the causes may be malfunctions of a magnetron, a capacitor, a high-voltage diode or a transformer.

The procedure for troubleshooting is:

1. When starting the furnace, check the supply of voltage to the primary winding of the high-voltage transformer. It is very important to observe the necessary safety measures against the possibility of electric shock.
2. In the event that the voltage is applied, it is necessary to check the reliability of the contacts on the high-voltage part. It includes a magnetron, a high-voltage capacitor, a high-voltage transformer and a high-voltage diode.
3. If the contacts are normal, you will need to replace the magnetron with a working one. It is also recommended to replace a high-voltage diode.

Microwave began to dry up badly

The reasons for this malfunction may be several:

1. Low voltage in the network - less than 200 volts.
2. Malfunction of the timer or the control unit.
3. Malfunction of magnetron, high-voltage transformer, high-voltage diode, high-voltage fuse or capacitor.
4. The failure of the inverter is in the microwave ovens of the inverter type.

Diagnosis in the event that the microwave has become poorly warm, will consist of the following:

Check the voltage in the mains. In case it has fallen, the microwave oven will operate in the previous mode, when it is normalized.

If the voltage is normal, the magnetron is replaced with a new magnetron.

Microwave buzzes but does not heat

In a situation where the microwave is noisy, but does not heat, the following elements may be faulty:

1. High-voltage diode . It transmits current in only one direction, with the diode blocking its passage in the opposite direction. If it breaks down, you will hear a buzzing, but the oven will not heat. The diode is replaced with a new one.
2. High-voltage capacitor . In this case, there will be no generation of microwaves. The solution of the problem will also be the replacement of the capacitor by a new one. Before checking or replacing it, it must be discharged.
3. Magnetron , which must also be replaced.

Magnetron failure

Such a significant element of the microwave oven, like a magnetron, needs extra attention. To keep it longer and avoid its failure, it is recommended:

• Ensure that during the work in the furnace there is no product;
• Do not allow metal dishes or other metal objects to enter the oven during operation.

Thus, after discovering that your microwave has broken down and does not heat, you can take the initial action if you have the necessary knowledge. In case of doubt, it is strongly recommended that you contact qualified specialists.