Question about Magic Chef CMV1000B Microwave Oven

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Microwave oven provides no heat

Tray spins & light works but no heat. In a senior moment, I used the microwave oven timer from 6 to 12 minutes. And similar to my head, there was nothing in the microwave.

Before I have a pro look at it, how likely is it that the magnatron (magnetron?) will have to be replaced. 90%? Any chance it's just a door switch or something else less expensive than a magnatron?

Thanks for any info.

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  • zmqr Sep 01, 2008

    That's right, I ran microwave empty for 6 to 12 minutes. I hope that many microwaves would have similar reactions to this abuse as I don't know model number. What do you think might be the result even if my microwave might be different?

  • mommyrox Sep 18, 2008

    I asked my 8 year old son to put pizza bites in the oven and set microwave timer for 8 mins and that I'd be right downstairs. It's the first time I've asked him to handle something like this. He did great except he forgot the part about using the microwave TIMER and he simply ran it empty for 8 mins. Now the thing won't heat! It's model number 721.80019401. Is a failed magnatron a simple fix or do I need a new microwave?

  • William Miller
    William Miller May 11, 2010

    Are you saying that instead of using the timer, you ran it empty for 6-12 minutes?

    What's your model number?


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I would suspect that your (or any) microwave that is run empty and runs but does not heat probably has a failed magnetron.

With your model number (usually found on as together on the back, inside the cavity or around the door frame) we may be abel to point you to parts and repair sources.

Posted on Sep 02, 2008

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