- 6-10 years
Microwave runs but no heat. Verified all the door switches work. All thermal sensors seem to be okay. I think one is normally open (KSD-40LC70). Please confirm. Verified 120VAC to the input of the high voltage transformer while the microwave is running, Check diode out of circuit and it is dropping 3.7 Volts, so I think that is okay. Suspect the magnetron at this point as the connectors are somewhat charred. See attached image. Anything else I should be looking at?