Still some 10-15 years ago, a microwave oven was a rarity for many. But now we are so related to this kitchen assistant that we no longer imagine our life without her. Unfortunately, sometimes it happens that the microwave has broken down - it does not heat, but it turns the tray . This situation is not uncommon and from it there are several exits.
What to do when the microwave is broken - does not heat, but works?
First of all, it is necessary to make sure that the device has ceased to perform its functions for elementary reasons. It happens that the microwave oven weakly warms or does not heat at all, but it works, and then the first thing to do is just wash it from the inside.
Fat particles that scatter on heating, as well as pieces of food accumulated at the far wall, and under the plate absorb the microwaves, and the products do not warm up or warm up completely.
In order to effectively wash the microwave , use a mild detergent. But before that, a container filled with boiling water is put in the device. Half an hour later, the dried particles on the walls become soaked, and one can proceed to sanitize the inner surface of the microwave oven.
The second factor that causes a poor performance of the device is the voltage drop in the network. It can be insignificant and very strong, and the degree of lowering will depend on how warm the microwave oven is.
How to fix a microwave, if it does not heat?
But if the microwave was washed, checked to see if the voltage in the network is set at 220 V, and the device did not work, then the following could cause more serious causes and cause a breakdown:
- problems with the transformer (does not give voltage to the control panel);
- fuse blown;
- the door closing sensor has broken;
- a doubler - a capacitor or a diode;
- a through capacitor is broken;
- The magnetron or magnetic lamp ceased to heat.
As you can see, the reasons for the breakdown when the microwave oven stops heating food, there are several, and in order to understand this, it is necessary to have at least minimal notions about the structure of this electrical appliance.
Armed with the necessary knowledge, as well as instructions for operating the microwave oven, you can begin to find out the reasons for the breakdown. But if you can hand over the device for repair, it is better to do so. After all, specialists in the service center know much better than ordinary people how to help in this situation, using modern diagnostic methods.
If you have concepts about the structure of the device and the tools you need, you can try to cope on their own:
- First of all, using an ohmmeter, check the sensor on the door, and after that they are already starting to remove the back cover if the sensor was in order.
- Now you need to check the fuse - if it is not blackened, then everything is in order.
- After that, they start testing the high-voltage fuse and fuse on the transformer - if there is resistance, then you should look for the cause further.
- If the multiplier-diode and capacitor fail, the needle of the tester does not move. But if they are workers, then the arrow fluctuates.
- It is quite difficult to check the electromagnetic lamp, namely the condenser on the filter. Before proceeding to the test, it is necessary to perform a discharge - by a special screwdriver, in turn, close the terminals to the body of the device.
After that, one probe is placed on the body, and the other on the terminal from the condenser. - You should also check the primary (the primary winding of the capacitor). It must have a voltage of at least 220V.
- If the cause is not found, only the magnetron remains - a powerful radiating lamp. It can be in working order, but with oxidized or torn off contacts. Having convinced in their good condition, it is necessary to test a filament - in working condition the tester will show from 2 to 3 Ohm.
But if after the verification the reason was never found, then still have to contact a specialist - perhaps during the test there was an error.