How to check, whether the magnetron works in the microwave?
Unfortunately, any technique has its own service life, and microwave ovens are no exception. Sometimes we face that, that it takes longer to warm up the dish, than usual. And sometimes the device works properly from the outside, but the food still stays cold. Often the reason for this behavior is the microwave, there is a faulty magnetron. Where is this detail and how to check it?
What is a magnetron
Microwaves can be very different, but there is one detail, without which no existing model will be able to work, be it Samsung, Phillips or other well-known brand.
The whole work of a microwave oven depends on a high-quality magnetron.
What does this detail consist of??
- The device is equipped with a special antenna to emit waves.
- A special cylinder is used to isolate the antenna from the working surface, made of quality metal.
- A special theater is responsible for the distribution of magnetic fields.
- But the magnets are responsible for the distribution of fluxes.
- In order for the part not to overheat, an important component for it is the radiator.
- That microwave radiation did not harm, the magnetron is equipped with special filters.
Diagram of the magnetron device
Such a design as a magnetron, understood only by professionals. Repairing it yourself is a time-consuming and thankless process. If you are sure, that the problem is in it, it is better to consult a specialist.
Read also: causes of microwave buzzing.
What problems may arise
Having studied the device of the magnetron, it becomes clear, that not all the detail fails. Perhaps, some of its parts do not work, which must be installed. There are several common causes of failure. How to check the magnetron and find out, where exactly the fault lies?
- One of the important components of the magnetron is a special cap, which stores the vacuum tube. If the problem is in it, then replace it will not be difficult.
- If the part overheats, that is, the radiator failed.
- Due to overheating, the filament may break. A special tester is required to diagnose this fault. In working condition, the thread shows the voltage 5-7 Ohm. If it fails, then the voltage will drop to 2-3 Ohm, if there is a break, then the device will show infinity.
- The breakdown of the filter is checked by the tester. If the part is working, the device will show infinity, in case of breakage - you will see numerical resistance.
There are breakdowns, which you will not be able to diagnose on your own. This requires not only knowledge, but also special equipment.
How to check a magnetron
The cost of replacing this part is so high, that many prefer to buy a new microwave, instead of repairing the old one. Before sending the damaged device to the landfill, you need to make sure, that the problem is in this expensive detail. To do this, you must perform certain manipulations:
- First, what you need to do, to test the magnetron is to turn off the power in the microwave, disconnecting the device from the network.
- Inspect the inside walls of the microwave. In case of magnetron failure, you will find melted areas, darkened or burned walls.
- If there are no external signs, it is necessary to carry out diagnostics by the tester.
- Check it out, whether the fuse is working.
The main signs of that, that the magnetron has failed, there are strange sounds, smoke or sparks from the furnace. After such external manifestations, the microwave stops working properly.
Read also: how to repair a microwave with your own hands.
Install a new part
If you have an expensive microwave model, it is wiser to replace the broken part, instead of buying a new stove. Of course, it is best to contact a service center, but you can try to make the replacement yourself.
Buying a new magnetron, pay attention to that, to match the power, corresponded to contacts and mounting holes. Otherwise, you risk buying an unnecessary part.
It is not difficult to connect a new magnetron, since it has only two main contacts. Detailed information on all designations is on the diagram, the main thing, check the compliance of the following parts of the device:
- The antenna must match the factory diameter.
- Make sure that the new device fits snugly against the waveguide.
- The length of the faulty antenna must match the new one.
Best, unscrew the old part and go to the service with her, so that experts can choose the right one for you.
Read also: why the microwave does not heat.
conclusion
The microwave is an indispensable helper in any kitchen. With its help you can quickly heat food, and cook a delicious meal. The breakdown of this technical marvel causes some stupor and paralyzes the usual rhythm of life. Many of the existing microwave malfunctions can be solved on their own, but if the magnetron failed, consult a specialist. Doing repairs yourself is dangerous not only for technology, but also for you.
