Not Heating Food

fellicianot1 · February 22, 2009, 10:48pm

I Have A Microwave That Is Not Heating The Food It Turns On But It Dosen’t Heat The Food

ApplianceJunk · February 23, 2009, 1:12am

Maybe a bad high voltage diode.

richappy · February 23, 2009, 12:41pm

If you hear a loud hum from the high voltage transformer, remove power, temporarily short the high voltage capacitor leads, and remove the wire from the magnetron that goes to the high voltage capacitor. If the hum now stops when you turn it on, you have a bad magnetron, if not, you have a shorted high voltage diode.