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Posted on Jul 14, 2008
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GE JVM1860CD-002 suddenly stopped heating food makes slight buzzing sound which it did not make prior to. Unit appears normal other than above symptions.

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  • ghorn2 Jul 14, 2008

    Following up on my previous posting. Upon disassembly of GE microwave I find the large "discharge fans" are not working, turntable motor does rotate, oven light is on, transformer fan works, no smells, no obvious melted components, digital display works fine, but no heating of water-food-etc.



    Also, the ceramic fuse in fuse holder test good



    Any clues?? Perhaps door microswitches?? Both upper & lower switches "click" when door latch hit microswitch, does "click-sound" mean switches are OK?



    Do I need to test door switches and/or magnetron??



    Thanks for any assistance...

  • ghorn2 Jul 14, 2008

    Not only does my GE Microwave ovcen nopt heat, its main discharge fan stopped working during the same timeframe.

    Capacitor, magnetron or diode involved with main discharge fan operation at same time as heating function?

    Thanks,

    Glen

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When the microwave won't heat, but you hear a loud buzz, you usually have a defective power diode, high-voltage capacitor, or magnetron. We recommend that you consult with a qualified appliance repair technician for help in determining the problem and deciding what to do about it.

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When the microwave won't heat, but you hear a loud buzz, you usually have a defective power diode, high-voltage capacitor, or magnetron.

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Check the magnetron with a digital multimeter to ensure its getting power, if it is then change but its not working then change the magnetron, if it isnt continue backward tracgint the components from the magnatron back until you find where you are getting power, try to insolate which component isnt working by this method..

my money is on the magnetron

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Check this link for some tips that you can try http://www.partselect.com/microwave+no-heat+repair.htm

Hope that helps..........

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