Signs of a broken microwave oven

[shapanwwuopi]

When the negative half-period begins, the diode VD1 closes and the voltage is supplied to the magnetron M1 together with the charge accumulated on the capacitor. This leads to a doubling of the voltage and the formation of an electric field of the required intensity in the magnetron.

Resistance R1 in this case is necessary for the discharge of C1. As a rule, this resistor is located in the capacitor body. As for VD2, it provides protection in case of an increase in voltage on the capacitor C1 or a short circuit in the magnetron M1.

Most often, the external signs of a microwave oven failure are the appearance of sparks, smoke clouds, the plate stops rotating, and the food placed in the oven does not heat up. Or the microwave oven simply does netherlands telegram data not turn on. In this case, it is dangerous to plug it into the network!
There are three main reasons for the failure of an electrical appliance:

Blown fuses;
Magnetron failure;
Burnout of the mica plate.
With this type of breakdown, you can repair the oven if you follow the instructions strictly. First, consider the functional diagram of the microwave oven.

We take the functional diagram because it is easier to understand the principle of operation of the microwave oven, it is universal, regardless of the brand of the oven, it is simpler compared to the basic diagram of the microwave oven.

And the arrangement of the microwave elements can be seen in this picture:

Main parts of the oven
It is better to start the repair by familiarizing yourself with the internal structure of the stove. Its main functional parts:

frame;
cooking chamber;
magnetron;
waveguide;
control unit.
When disassembling the oven, the magnetron will be located in the center. This device is a microwave generator whose operating principle is based on the interaction of an electron flow and a magnetic field. The magnetron device includes a cathode, a vacuum chamber, and an anode in the form of a copper cylinder.