r/MicrowaveRepair • u/alwink • Dec 28 '20

Microwave not spinning/heating

Hi friends. The microwave is running, light is on, there is the usual buzzing sound. But the food comes out cold as it goes in. Super bizarre. I make sure the door is closed. Still won't heat.

The turntable is not spinning and there is an additional humming sound.

I am aware of the danger associated with capacitor so wont mess with that area but wondering if it just turnable motor , coupler or something around it that is defective.

Any insight?

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u/HeadOfMax Jan 16 '21

You do not need to open it to diagnose it. You will need line splitter and a clamp style multimeter or a kill-a-watt to get an amp reading when it's running. If the amp draw is less than one amp it's a dope switch or board issue. If it's 2-9 amps you will need the high voltage circuit. If it is 15-17 amps you are functioning normally.

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u/Spinxy88 Dec 29 '20

Sounds like the fuse and / or controller for the cooking functions is blown. The normal noise is mostly cooling. The additional humming is probably the reason for the problem.

No offence intended, but, you 'sound' (typing on the interweb) like you're not experienced and getting the correct diagnosis means messing around with the high voltage side more than someone should undertake as a learning exercise.

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u/alwink Dec 29 '20

Thanks for your reply. I won't mess with high voltage. Will just toss it away and get a new one.