Question about GE Spacemaker JVM1640SJ Microwave Oven

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Microwave repair GE JVM1640WB Microwave works but noes not heat

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  • bnwalker Oct 24, 2008

    Light & Turntable comes on and louder than usual.

  • chachi1 Oct 24, 2008

    When you hit Start to cook, do the inside light and turntable come on?

    Any unusual noises? Is it louder or quieter than usual?

    These answers will help me judge whether it's in the high voltage section (magnetron, transformer, or diode) or the control section (door switch or control board relay or connection).

  • hdfattire96 May 11, 2010

    unit go's on but dose not heat

  • William Miller
    William Miller May 11, 2010

    When you hit Start to cook, do the inside light and turntable come on?

    Any unusual noises? Is it louder or quieter than usual?

    These answers will help me judge whether it's in the high voltage
    section (magnetron, transformer, or diode) or the control section
    (door switch or control board relay or connection).


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  • GE Master
  • 8,820 Answers

Okay, thanks for the info. For reference, if it's older than 9 years, the magnetron will not be under warranty.

I'd say you have a shorted high voltage rectifier diode or a bad magnetron.

There should be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.

At our site, we have a video showing how to remove a typical over the range control panel assembly in under 5 minutes.

Here are some links you or someone you know can use (in order given) for more test help, but read the safety warnings first:

http://www.gallawa.com/microtech/diode.html (if it is NOT shorted, it's probably fine)
http://www.gallawa.com/microtech/mag_test.html
http://www.gallawa.com/microtech/xformer.html

You can usually find helpful exploded view diagrams and order parts by entering your full model number here.

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

Posted on Oct 24, 2008

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