Why the microwave does not heat, and a plate, rotating and the light is on? The fan is buzzing, and the food is cold. What to do and where to go? When technology, which now costs a lot of money and is very much needed in the kitchen, you can not throw away, and just fix it, all knowledge on repair of electric devices goes in a course. To achieve a positive result requires only a basic knowledge of the device and microwave electronics, Well, as a last resort, the simplest data search skills on the Internet.
Simple microwave malfunctions
There are a number of reasons, why the microwave stopped heating and it's not about breaking parts, example:
- The mains voltage has decreased. Microwave ovens for work, as well as its heating may be affected by slight reductions of 20V. As a result, the plate will be heated, and there is no food in the middle of the vessel. The issue of power outages is resolved in one day: you just need to go to the store and buy a power supply.
- The network is congested. If two powerful devices work from one socket at the same time, overload occurs. This issue can be solved by installing another outlet.
- The door failed. As a result of latch breakage, the door closes loosely and the microwave does not heat or heat food poorly. Here you can try to repair or completely replace the latches.
- Wrong mode selection. Very often after the defrost mode forget to switch back to the microwave. Defrosting does not heat food to the required temperature, and you are already going to disassemble the device.
Advice:
Read also: Repair the blender with your own hands
Complex microwave malfunctions: looking for the real reason
Most often, the microwave oven works, but does not heat food because of that, that the magnetron has failed. Next on the list will be the capacitor, fuse, the transformer also often breaks. The reason for poorly heated food may be as follows:
- the timer or the control unit itself broke;
- due to breakdown of the transformer and other parts;
- perhaps, faulty inverter (this only applies to inverter microwaves).
The microwave oven does not heat and buzzes a lot
If you find out, that the microwave turns on but does not heat and makes an unusual sound (example, buzz), this is 3 explanation:
- the diode became unusable. This part does not allow current to flow in the opposite direction, the current moves only in one direction. If this part fails, the appliance starts buzzing and does not heat the food;
- it's time to change the capacitor. Capacitor failure leads to the generation of waves and the device hums;
- magnetron breakdown. A defect in this part can also cause buzzing or buzzing.
Important:
If you decide to find the cause and repair the microwave with your own hands, then consider, that it is a dangerous device. Even if the microwave is disconnected from the mains, there is a high probability of high voltage current, up to 5 000 IN. If you have doubts and you are not sure of your own knowledge, it is better to show the device to the master, even for diagnostics alone. No need to risk your life, after all, the device is not worth it.
If you still decide to repair the microwave oven with your own hands, then before, how to watch something, unplug the appliance. Be sure to find the instructions, where are the names of all the details, which are there.
The microwave does not heat: check the fuse
First of all after removing the cover, it is necessary to be convinced of serviceability of all safety locks. If you see, that they turned black or the thread burned out, then you just need to replace them. Often there are two parts of the fuse inside.
When buying a new item, be sure to take the old one (burned). To resolve the situation for a while, it is not recommended to make bugs out of wire. There is a high risk of fire, and the price of a good fuse is no more 50 rubles.
Advice:
Read also: How to repair a thermopot with your own hands
The microwave is buzzing: check the capacitor
If the appliance hums when switched on, there is a probability, broken capacitor. It is easy to check its serviceability: you need to take and connect an ohmmeter to the part. If all is well, then the ohmmeter arrow moves. And if it stands, then the capacitor has failed, and because of this the stove makes noise.
Important:
Before replacing or checking the capacitor, it must be completely discharged!
If you smell smoke or something inside while the microwave is operating, after watching this video, you will understand what is going on. It shows how you can repair a microwave oven, if it sparkled.
High voltage diode
Most often, this device is not tested due to the complexity of this procedure. The easiest way is to buy a new part, but before that, make sure it breaks. You can test with a capacitor, which should not be heated. Also a sign of a diode malfunction may be a hum when the fuse is turned on and blown.
Magnetron
If you do not find any damage during the inspection of the device, then it is likely, what's the matter with the magnetron. Sign, which determines the failure of the magnetron is a loud noise (buzz) during operation of the device. If the microwave oven hums and does not heat, then you need to look at the magnetron, there are no cracks or deposits. If the breakdown is not visible visually, then do an ohmmeter check. If the magnetron burned out, then you need to buy the same. It must have the same parameters and size.
Advice:
Read also: Repair the vacuum cleaner with your own hands
Prevent breakage
We have shared with you information on how to proceed, if the microwave oven is running, but does not heat food. It is very important to determine the cause and problem why the microwave has stopped heating food. Most often, the answer does not have to look long: most likely, you have used the appliance incorrectly.
That the equipment served long, you should not do so:
- heat food in a metal container (spoon also belongs here);
- turn on the empty device (without food);
- heat eggs;
- put containers with lids.
Over time, any equipment can fail due to wear and tear of spare parts. Machinery, made in China, can break quickly due to haphazard assembly, to do qualitatively they got used only for themselves. If the price of the equipment is ridiculous enough, then remember the saying, that the miser pays twice. At the end of the article we want to give you advice: if your MICROWAVE is under warranty, then do not open it under any circumstances, and don't start looking for a breakdown on your own. Trust skilled workers, who perform diagnostics and work at the expense of the company.
Even if you feel, that you can repair the device yourself, know, that there is a great danger in any wrong action. The device has the ability to store electricity and can be struck by high voltage current. Trust the professionals, which can identify the problem even just by looking at the device. Your life is much more valuable! Think twice, before, how to open the lid.