Question about GE JVM1790 1000 Watts Convection / Microwave Oven

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JVM convection microwave

I have a JVM 192 002 convection microwave that the microwave part isn't heating. It runs and sounds like it is working but the food is still cold. I have heard there may be a fuse in the back that controls the microwave heat? The convection works perfect, just the microwave broke. PLEASE HELP!!

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  • tcorrell01 Aug 08, 2008

    Everything looks and act's normal, does not have a turntable but lights all work, just no heat.

  • William Miller
    William Miller May 11, 2010

    Do the inside light and turntable come on when you try to cook?

    Is it making any unusual noise or is it louder or quieter than normal?


  • Anonymous Mar 27, 2014

    Model number is KHHC2090SBL-2. Microwave works at heating great, but convection does not heat. Preheat mode for more than 45 minutes and temp does not rise above 70.

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  • GE Master
  • 8,820 Answers

I see. Okay, well then I would expect there's a problem with a high voltage part, such as the diode, magnetron or transformer.

Your model number should be entered as JVM192002 and you can find exploded views here.

You can usually find GE parts for much less here.

There should also 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.

Here are some links you or someone you know can use for test help, but read their safety warnings first:

http://www.gallawa.com/microtech/diode.html
http://www.gallawa.com/microtech/mag_test.html
http://www.gallawa.com/microtech/xformer.html

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

Posted on Aug 10, 2008

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