How to check the magnetron of the microwave oven on serviceability

Microwave composed of a plurality of parts, actively complement each other's work. The output of one of the building leads to the cessation of all components.

A major component of the magnetron is. When a fault occurs in the microwave it was he who passes the primary check.

Function and configuration

Heating and cooking in a microwave oven is carried out at the expense of radiation, which highlights the magnetron.

reference. The magnetron is an electron tube, which by means of magnetic fields and the electrons generates microwaves.

Speed ​​of cooking depends on the power that can give off this lamp. The higher the power, the speed will grow taller. In other words, magnetron is the main element, the serviceability of which provides the functionality of the entire microwave oven.

How does the device

The design of the important parts of the microwave are the following components.

• Antenna microwave radiation.
• Cylinder to isolate the antenna.
• magnetic circuitDistributing the magnetic field.
• magnets for the distribution of the flow.
• RadiatorThat protects the element from overheating.
• Filter.

As with any part of the magnetron of the frequent use may occasionally fail. The main factors and termination of the popular methods of testing discussed below.

Symptoms

Failure of the microwave oven becomes a real problem for each owner. After microwave has long since become an indispensable tool in the process of cooking and heating foods.

Common Symptoms details

• Termination heating. Microwave works but does not heat or heating is carried out periodically.
• The appearance of smoke and sparking the emergence of inside the appliance casing.
• The emergence of the melted portions on the inner walls of the microwave.
• The emergence of extraneous noise (Hum or buzz) when the mode.

Manifestation of any of these factors indicates the occurrence of faults among the parts of the microwave oven. Proper diagnosis and timely repair will help to quickly resolve the problem.

Check the magnetron

visual inspection

In order to find out the main reasons of failure, a microwave oven, you can use several methods for testing the magnetron. The first of them - the visual.

The first step is check the relevant entry of electricitySince the cause may be that. Try connecting the microwave oven into a different outlet.

Important! For stable use of the microwave and the prevention of injury and to avoid accidents is recommended to use special adapters.

If the cause is not the supply of electricity, it is necessary explore the inner casing microwave. The presence of melted or charred areas of a malfunction of the magnetron. To accurately determine the cause of recommended inspection of all parts of components.

Checking parts

To conduct an audit of all the elements, the magnetron must be removed from the microwave oven housing. For this remove the lid of the rear housing and find the desired item. She is situated next to the transformer. For accurate diagnosis accurately extract the part of the body.

Important: prior to withdrawal of the magnetron microwave process must be shut down.

Cap

The main reason for the termination of the work is most often burned cap. He works as an antenna for the emission of microwaves and the first fails. Use in everyday life, such a device can not continue.

cap

Another factor is the melting of the work stoppage plastic plugs or mica plates. It protects the magnetron waveguide from entering the food particles and grease. With frequent use and care of the low-quality inner housing plate It begins to melt.

Waveguide

Regular use and lack of proper care of the microwave housing are the major causes waveguide damage. It deals with the microwave output from the magnetron-rays into the chamber of the household appliance. The absence of plaque and obvious damage suggests it is working properly.

magnets

Failure of magnetic system item must be changed to a new one. If the damaged only the upper magnet (it may break), you need to spend only a replacement.

Filament

the filament may also cause failure of the device. When viewed seen obvious damage resulting blown filaments.

depressurization

A possible reason for the termination of operation of the equipment can become its depressurization. In this situation, must be replaced with a magnetron as restore the natural operation of the magnetron is impossible without the proper vacuum.

Reference: to carry out repair work on the replacement of the magnetron or its components is not recommended independently. It is better to turn to professionals to specialized service centers.

Check multimeter

To conduct a qualitative and complete testing experts recommends using a multimeter. The tester can measure the DC and AC voltage, the diodes to inspect and determine the exact cause of the microwave oven to malfunction. Particularly useful is the device in the absence of external signs of damage.

Performing checks

• For inspection must enable the meter and set the initial value of 200 ohms.
• Next, we need Connect the test leads to the terminals of the magnetron.
• The optimal value - 0.7-1 units. The deviation from the values ​​to a violation of the instrument.
• The complete absence of any shifts and new indicators showed irregularities in the filament. The main reason is their truncation. It will require specialist assistance in carrying out repair works.

Check capacitor

Using a multimeter, you can also check the capacitor. is he performs the functions of the battery during operation of the magnetron. Therefore, its failure could trigger and termination functionality of the magnetron.

The essence of the test is to ping capacitor using the inspection device.

• To do this, set maximum value multimeter.
• Further one multimeter probe is connected to a terminal (You can use any), and the other to establish the exact contact with the capacitor body.
• When good condition indicators should stop their values ​​at "infinity".
• any deviations indicate failure of. If the charge penetrates the body, so any damage in the most capacitor capacitance. The device is in need of repair or replacement.

Reference: the use of measuring devices for measuring indicators can not always guarantee the right set values ​​and data accuracy.

conclusion

Magnetron - the main part of the microwave oven. Proper care and timely diagnosis of any damage will help extend the life of the microwave oven.