The microwave oven is made up of many details, actively complementing each other's work. The failure of one of the systems leads to the cessation of all components.
One of the main components is magnetron. If a malfunction occurs in the microwave, it is he who passes the first check.
Purpose and device
Heating and cooking in the microwave is due to the radiation that emits a magnetron.
reference. A magnetron is an electronic lamp that generates microwaves using a magnetic field and electrons.
The cooking speed depends on the power that this lamp can produce. The higher its power, the higher the speed will increase. In other words, magnetron is the main element, the health of which provides the functionality of the entire microwave.
How is the device
The following components are distinguished in the design of an important microwave component.
- Antenna for emitting microwaves.
- Cylinder to isolate the antenna.
- Magnetic coredistributing a magnetic field.
- Magnets for flow distribution.
- Radiatorprotecting element from overheating.
- Filter.
Like any part, the magnetron due to frequent use can periodically fail. We will talk about the main factors of termination of work and popular methods of verification below.
Symptoms
The failure of the microwave oven becomes a real problem for every housewife. After all, the microwave has long become an indispensable assistant in the process of cooking and heating dishes.
The main symptoms of a part malfunction
- Stop heating. The microwave oven works, but does not heat up or heating is carried out periodically.
- Smoke and sparking inside the housing of the appliance.
- Occurrence of fused areas on the inside walls of the microwave.
- Extraneous noise (humming or buzzing) when the mode is on.
The manifestation of any of these factors indicates a malfunction among the parts of the microwave oven. Proper diagnosis and timely repair will help to quickly solve the problem.
Magnetron test
Visual inspection
In order to find out the main reasons for the failure of the microwave oven, you can use several methods for checking the magnetron. The first one is visual.
First of all necessary check the corresponding supply of electricity, since the reason may be this. Try plugging the microwave into a different outlet.
Important! For the stable use of the microwave and to prevent injuries and to avoid accidents, it is recommended to use special adapters.
If the reason is not the power supply, you must inspect the inside of the microwave. The presence of fused or charred areas indicates a malfunction of the magnetron. To determine the exact cause, it is recommended that all components of the part be inspected.
Checking individual parts
To check all elements, the magnetron must be removed from the microwave. For this remove the back cover and find the necessary part. She is situated near the transformer. For an accurate diagnosis, carefully remove the part from the housing.
Important: before carrying out the process of removing the magnetron, the microwave must be de-energized.
Cap
The main reason for the termination of work is most often burnt cap. It acts as an antenna for microwave radiation and is the first to fail. It is impossible to use such a device in everyday life.
Stub
The next stopping factor is melting. plastic plug or mica plate. It protects the magnetron waveguide from food particles and fat. With frequent use and low-quality care of the inner body of the plate begins to melt.
Waveguide
Regular use and lack of proper care of the microwave cabinet may be the main reasons. waveguide damage. He is engaged in the extraction of microwave rays from a magnetron into the chamber of a household appliance. The absence of plaque and obvious damage indicates its serviceability.
Magnets
Upon failure magnetic system the part must be replaced with a new one. If only the top magnet is damaged (it can burst), you only need to replace it.
Filament
Filament can also cause the device to malfunction. On examination, obvious damage as a result of burnout of the threads is noticeable.
Depressurization
A possible reason for the termination of the operation of the equipment may be its depressurization. In this situation, it is necessary to replace the magnetron, since without the proper vacuum it is impossible to restore the natural operation of the magnetron.
Reference: to carry out repair work on the replacement of the magnetron or its components independently is not recommended. It is better to contact professionals in specialized service centers.
Multimeter check
To conduct a quality and complete audit, specialists recommend using a multimeter. The tester can measure direct and alternating voltage, check the diodes and establish the exact cause of the malfunction of the microwave oven. This device will be especially useful in the absence of external signs of damage.
Check execution
- To carry out the test, turn on the measuring device and set the initial value to 200 ohms.
- Further required connect probes to magnetron contacts.
- The optimal value is 0.7-1 units. Deviation from the values indicates a violation in the tool.
- The complete absence of any shifts and new indicators indicates violations in the operation of filaments. The main reason is their breakage. It will require the help of a specialist in carrying out repairs.
Capacitor check
Using a multimeter, you can also check the capacitor. is he performs the functions of a battery during operation of a magnetron. Therefore, its failure can provoke the cessation of the functionality of the magnetron itself.
The essence of the check is to ring capacitor using a checking device.
- For this it is necessary set maximum values multimeter.
- Further connect one multimeter probe to a pin (you can use any), and others set the exact touch with the capacitor housing.
- In good condition indicators should stop at infinity.
- Any deviations indicate failure. If the charge pierces the case, it means that damage has occurred in the capacitor itself. The device needs to be repaired or replaced.
Reference: the use of measuring devices for measuring indicators cannot always guarantee correctly set values and accuracy of data.
Conclusion
Magnetron is the main part of the microwave. Proper care of the device and timely diagnosis of damage that has occurred will help extend the life of the microwave oven.
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