Microwave does not heat - causes

Microwave has become an indispensable attribute in the kitchen in many families. And sometimes it's difficult to do without an assistant, who will warm up or prepare your favorite dish without problems. If the microwave oven stops working or the microwave does not warm up - the reasons are not always clear, but even in this case do not rush to carry it to repair. With the help of our advice you can determine the essence of the failure and the possibility of their elimination.

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What are the most common problems?

With frequent use, of course, there are various problems in the operation of the microwave oven, for example:

• the light is on, the fan is spinning, and the food does not heat up;
• does not light, the dish does not turn and food does not warm up;
• does not heat or hum.

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The microwave stopped heating the food - what should I do?

With the help of this article you can solve your microwave oven problems.

The main reasons why the microwave stopped heating food:

• insufficient voltage in the network, it needs to be 220W, and if there is not enough even 10-15V, then the device does not work correctly;
• broke the miniature microwave oven switch;
• the mains fuse blown;
• high-voltage fuse in the casing;
• fuse on the transformer;
• diode failure;
• condenser fault;The
• transformer does not apply voltage to the control panel;
• breakage of the through capacitor;
• does not work magnetron.

For each reason, consider ways to resolve them.

Checking the mains voltage

Carefully read the instructions that came with your microwave model when purchasing. There you can find the answer to the question: "Why does not the microwave warm?", And you will understand what actions you need to take.

If there is no instruction, then first of all check the voltage in the network using a multimeter. We need to have 220V.After a period of time, the voltage can be 220V and your stove will warm.

Miniature door switch for microwave oven

Next, disconnect the appliance from the mains and check the miniature switch. We check with an ohmmeter:

• if the scale on the device shows more than 0, the item is working;
• if 0, then the spare part should be replaced.

Mains fuse

If the previous actions did not work and why the microwave does not heat - the reasons are not clear:

1. Remove the top cover by unscrewing the screws.
2. Check the mains fuse.
3. Visually inspect whether there is a burnt out wire.
4. To be completely sure that the workpiece is working, we check the resistance by the tester.
5. Next ohmmeter check the high-voltage fuse in the casing. The arrow from 0 has refused, means - it's OK.Take the tester to test the fuse on the transformer.

Testing the multiplier

The next step is testing two parts of the diode and capacitor multiplier. If the condenser is broken, then when you turn on the microwave you will hear a loud buzz and buzz. A more accurate definition requires an ohmmeter check. The arrow has deviated and gone into infinity, so - the detail is working. If the capacitor is broken, the arrow does not deviate - the contact breaks.

It can immediately and show a deviation, but if it is small, it means that the condensate is broken. It is necessary to replace, preferably together with a diode.

Checking the capacitors

We begin to check the pass-through capacitors of the filter on the housing of the electromagnetic lamp. First you need to discharge the electrical screwdriver with an insulated handle, in turn, close the conclusions to the case. One rod of the ohmmeter is installed on the output of the tank, and the second - on the metal case.

If the sensor does not show zero resistance - the workpiece is working, and if zero is to be replaced.

Then test the capacitor contacts for breakdown. Between the contacts there should be a resistance of almost 0.1 Ohm

After - check the primary winding of the transformer by the tester. It is necessary to turn on the microwave for 5 minutes.and put on a glass of water with water - when measuring the voltage should be 220V.

Important! If you do not have sufficient knowledge and skills in electronics, it is better to take the microwave oven for repairs to a service center.

Magnetron

The next step is to check the magnetron:

1. First of all, we examine the strength of the soldering of the contacts of the induction filter coils and the merger of the magnetron supply terminals with the through capacitors.
2. A disconnected or oxidized terminal can be repaired by yourself.
3. Then check the resistance of the magnetron filament - the data should be 2-3 ohms.

Important! If all previously checked parts are working properly, then - the magnetron itself is broken. Independently you can not replace this part. It is better to take the microwave oven for repairs to a service center.

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Causes of breakdowns of microwave ovens

In order for your microwave oven to be an assistant for a long time, you need to observe a few simple rules:

• do not lay metal objects for heating;
• do not heat forbidden foods, for example, eggs in raw form;
• do not include an empty microwave oven.

Following these simple rules, a microwave will last you for many years.

Important! If your stove started to work badly right after purchase. Hence - it is made of poor-quality materials. Do not open such a device, as break the warranty seals. Take it to the store immediately, change it to another, or you will receive money back.

We hope that you managed to find out the reasons why it does not heat the microwave oven by yourself and eliminate them. Hence - you can continue to cook delicious dishes in 5 minutes and to please your culinary with a variety.