Question about Kenmore 62622 Microwave Oven

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Microwave makes loud buzzing sound when on and no heat

Microwave all of a sudden started making loud buzzing sound when turned on and no heat.

Posted by Cammie Ockman on

  • 2 more comments 
  • sewershark Dec 17, 2007

    I have the similar probelm with the Model 721.80522. When I try to heat anything, the microwave activates, lights on and turntable moves. Then I hear a loud buzzing sound, like something inside is electrically arcing. I haven't tried running it empty, however.

  • bcrowley Dec 18, 2007

    very loud buzzing noise when turned on

    model: 61601 (hood combination)

    thanks for your help

  • Anonymous Jan 16, 2008

    I have the Kenmore model # 721.80523500 hood combination and it too started making a loud buzzing sound when turned on.  For a couple of days, it made the sound intermittently, but now, the buzzing sound is constant.  It doesn't heat any thing I put in there. The only time it sounds normal without the buzzing sound, is when I try to heat on Power=0.  But you can't heat anything with 0 power, and it makes the buzzing noise with Power = 10 thru 100.  Is this something I can repair myself?  Please help!

  • Anonymous Apr 30, 2009

    "Microwave makes loud buzzing sound when on and no heat"

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William Miller

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  • 9,179 Answers

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.

Posted on Mar 21, 2007

  • Hays Clark Apr 06, 2012

    I have the same issue, when I put a cup of water in it and cooking on a low power level the buzzing stops and sounds normal. Any setting Power Setting higher then 1 will cause the buzzing to start again.

  • Hays Clark Apr 06, 2012

    I have the same isssue and tried the low power step. The buzzing goes away when on Power Level 1. Any power level above 1 the loud buzzing returns.

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