Question about Kenmore 62622 Microwave Oven

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Microwave buzzing Kenmore Micro Hood Model 80413. Microwave makes loud buzzing sound when trying to cook and no heat.

Posted by Cammie Ockman on

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  • Anonymous Mar 27, 2014

    sounds like exhaust fan motor is stuck and will not heat

  • Anonymous Mar 27, 2014

    buzzing wont heat

  • Anonymous Mar 30, 2014

    not heating and making a loud buzz sound

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1 Answer

William Miller

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  • Kenmore Master
  • 9,179 Answers

It's likely a bad magnetron or maybe the high-voltage transformer. If it's within the warranty period of the magnetron (5 years or less), I would call Sears. In my professional opinion, no one should work on a microwave unless they are fully informed and aware of the deadly hazards and necessary precautions. If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk You can find helpful exploded view diagrams and order parts by entering your full model number (without the suffix) here: http://tinyurl.com/gv383

Posted on Mar 23, 2007

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Usually that is a sign that your magnetron tube has gone bad (shorted out).

If you need further help, reach me via phone at https://www.6ya.com/expert/ronald_e6b9572cebe3ad27

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There's no heat, but it buzzes loudly When the microwave won't heat, but you hear a loud buzz, you usually have a defective power diode, high-voltage capacitor, or magnetron. I recommend that you consult with a qualified appliance repair technician for help in determining the problem and deciding what to do about it.
And if you have your warranty for this you can use it to ok
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We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.


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Have you tried putting a cup of water in it and cooking on a low power level? If it buzzes only when it is on the cook cycle, that would narrow it down. More detals might help us help you, including the model number.
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