The microwave oven does not heat well

[shapanwwuopi]

This is due to low voltage in the electrical network or loss of emission by the magnetron.
The oven does not turn on. First, check the integrity of the power cord, fuse and the presence of voltage in the socket. Then the state of the locking microswitches that turn on when the door is closed. If everything is in order, the reason is the oxidation of the contacts of the thermal relay located on the magnetron body.

The sump does not rotate. The coupling connecting the motor shaft to the sump is cut off or the motor is faulty.
When working, the oven, in particular Mystery mmw, makes a loud humming noise. The transformer or fan is faulty.
The entered commands are not executed. The contacts australia telegram data of the control unit may have burnt due to high temperature.
No indication or timer is displayed. The microprocessor is malfunctioning. In this case, the repair of the touch control panel should be entrusted to a specialist.
To do the repair yourself, you need to open access to the elements under the casing on the back wall. To remove it, unscrew 6 bolts with a Phillips screwdriver. When removing the elements, keep in mind that they are secured with hidden locks, so you do not need to waste time looking for screws or bolts. To remove any element, you need to press on the corresponding ledge. There may be several fasteners, so before removing them, make sure that they are all removed.

Before removing the casing, the power cord must be disconnected from the socket.

Since capacitors retain a charge for a long time, it is necessary to discharge them immediately by short-circuiting the terminals with a piece of insulated wire.

It is better to repair a microwave oven with your own hands using a functional diagram. It is universal for all ovens and reflects all the elements in sufficient detail. You can repair a LG microwave oven with your own hands in accordance with the recommendations below.