Question about Kenmore 79203 Elite Stainless Steel 2.0 cu. ft. Countertop Microwave w/ TrueCookPlusTM Technology

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Kenmore elite microwave 79203 buzzes when off

I put some food in the microwave and hit minute plus. it turned on and cooked the offd. when it turned off the buzzing did not stop. this buzzing noise always happens when it comes on but normalls stops when the microwave goes off. i tried unplugging it for a few mins and plugging it back in. didnt work. i tried letting it sit for a min or 2 to see if it would stop by itslef. didnt work. and i tried running it again and turning it off.... buzzing continued.... can anybody help me with this?

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  • Kenmore Master
  • 9,179 Answers

It sounds like you have a shorted cook relay on your control circuit board.

That can usually be repaired more economically than replacing the circuit board.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Posted on Jan 10, 2013

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MicrowaveSvc

William Miller

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SOURCE: Kenmore microwave making loud buzzing sound.


We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.


Posted on Mar 06, 2009

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MicrowaveSvc

William Miller

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SOURCE: Microwave buzzing

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

fridgetech

Craig Shelton

  • 473 Answers

SOURCE: Kenmore over the counter microwave problem

It has a bad relay on the control board. The board will need to be replaced.

Posted on Nov 13, 2007

Anonymous

  • 579 Answers

SOURCE: Kenmore 721.63662300, 1200W

The magnatron is shorting and overloading the high voltage transformer which is complaining with a load noise. Worth fixing if you do it your self. Magnatrons cast about $40 wholesale. There are just a few varieties of them that fit almos all brands. Try www.partstap.com

Posted on Dec 31, 2007

Anonymous

  • 1 Answer

SOURCE: Kenmore 721.80524500 makes a buzzing, grinding noise

Your problem is due to the "magnetron" arcing to the wave guide within the microwave. Picture someone arc-welding stuff together inside the microwave casing, that's essentially what's happening. It is a fire hazard and you should stop using the microwave immediately. As far as I know, there isn't a recall on that particular model (though there was on another similar Kenmore/Whirlpool model) so if it's out of warranty, you're out of luck.

Posted on May 01, 2009

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