Question about Kenmore 62702 Microwave Oven

1 Answer

Microwave making noise, not heating

All of the sudden my microwave started making a rattling noise, but it continued to run, meaning the lights, timer, turntable etc worked, however, the heating element doesn't appear to be working. It's a "built in" unit and I can't get to the back or sides of it. Also no error code appears. Everything looks normal. the power level is at 100% so I know that's not it.

Any suggestions would be helpful.

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  • SearsBuyer Dec 04, 2007

    Thanks for your suggestions, I have also been told that could be a diode? Does that make sense too?

  • shailly Aug 07, 2008

    If it's a diode problem, how to rectify it ?

  • swarnasenthi Sep 18, 2008

    Everything in the microwave works excepting for heating and its making rattling noise.Need help.



    Thanks

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  • Kenmore Master
  • 9,098 Answers

Was the noise something like someone growling into a coffee cup?

As odd as that sounds, that's a common sound for a bad magnetron to make, a hollow gurgling or sizzling.

It may be the magnetron, but generally, the most common causes of a failure to heat are:

- bad door switches or door switch mounts
- loose connection at the magnetron
- problem or loose connection on the control unit circuit board
- bad magnetron or other high voltage part

If you or a friend decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and
disassembly information at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

You can usually find helpful exploded view diagrams and order parts by entering your FULL model number here: http://www3.sears.com (the 3 is correct)

We're happy to help and we appreciate your thoughtful rating of our answer.

Posted on Dec 04, 2007

  • William Miller
    William Miller Dec 05, 2007

    .

    When the high voltage rectifier diode fails, it usually shorts and it makes the oven sound a little louder.



    It seems like everything is working, but there's no heat.



    It usually doesn't produce what I would call a rattling sound.

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