1, the second interlock switch is broken: the reason for the damage of this second interlock switch is that the working voltage of 220v cannot work normally due to frequent operation, poor contact and electric shock destruction. Solution: First check whether the fuse is blown, and then check whether the monitoring switch is normal. If it is normal, it means that the interlock switch is broken. Just change the switch.

2, high-voltage transformer damage: Many friends have encountered such a problem, that is, the high-voltage transformer is broken. After startup, if the light is on but the turntable does not move, it means that it can't be heated. If it is normal, just replace the high-voltage transformer.

3, the magnetron is broken: the magnetron is broken mainly because the starting light is on but not heated. Generally, this reason is due to the aging filament of the magnetron inside. Solution: When checking, talk about high-voltage capacitor discharge, and test the filament winding. Normally, it is 0 ohms. If it is not, it means that the magnetron is broken and it can be replaced.

4. The high-voltage diode is broken: This situation often happens. The disk is rotating, but it is not heated. If this is the case, it is necessary to test whether the filament winding is normal during maintenance. If it is normal, it is necessary to check whether the high-voltage diode is normal. If the test results are infinite, it is necessary to change the high-voltage diode at this time.