1. If the lights of the plug-in electric furnace don't light up and the turntable doesn't turn, it should be safe.

If there is power supply, don't heat it.

(1) If you can hear the hum when starting, it proves that the transformer is not broken; The possibility of magnetron failure is also very small, and the most likely is the high-voltage fuse caused by the breakdown of high-voltage capacitor.

(2) If you can't hear the hum, it may be that the transformer is broken (unlikely) or it just doesn't press well. The monitoring switch is not pressed, just adjust it, there is no need to replace it.

It is recommended to send for repair, high-voltage insurance and capacitor replacement, which will not cost much.