Question about GE Spacemaker JVM1640SJ Microwave Oven

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Doesn't heat It is an XL1800 Spacemaker (over range) and just doesn't heat. Everything else works fine; light, fan, etc. What could be wrong?? Thanks for any help.

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In this case it is more likely to be a high voltage component, but most commonly it will be a bad connection on the magnetron or a bad magnetron.

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 (such as a shorted diode)

If you or someone you know 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://tinyurl.com/gv383

There should also be a "mini-manual" hidden inside the unit behind the control panel, which is very helpful when troubleshooting.

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

Posted on May 09, 2008

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  • Contributor
  • 16 Answers

Bad magnatron tube.. but this is a very technical repair.. it's very dangerous to open a microwave if you are not trainned properly. you should call your local repairman for this repair..

Posted on May 09, 2008

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