Question about GE Spacemaker JVM1640SJ Microwave Oven

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Not heating My JEM model GE Spacesaver II is not heating. I hear it turn on normal. Then, less than 5 seconds later it sounds like it is working harder. It makes more noise now than when it was working. When I unplug the magnatron, there is no noise. Diode? How do I test? Magnatron? How do I test? The fan is working. It has been above a stove so it has been working in a higher heat environment than counter top.

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  • Stantec Nov 05, 2007

    I was not able to find safety information by using the above link

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  • GE Master
  • 9,098 Answers

Are you saying that you're unplugging the maghnetron and then running it? If so, that's incredibly dangerous.

You're looking at 3000VDC which can kill instantly.

It may be a shorted diode. Unless you have a really good meter, you won't be able to properly bias the diode to be able to fully test it, but they usually short when they fail.

It may also be a bad magnetron. Most often when they fail and make noise, it sounds like someone gargling into an empty coffee cup. Odd, but true.

We have critical information on safety & disassembly at our site,
linked 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://tinyurl.com/gv383

Posted on Nov 05, 2007

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