Question about GE JVM1440 Microwave Oven

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Everything (electronically) works, but doesn't heat. Yesterday autistic son opened while it was running & husband accidently bumped door from underneath - suggestions! and thanks!

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  • sbreaux10 Sep 16, 2010

    read other reviews that said door jam could be issue with this type of problem...what about that? thanks!

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It is typically the magnetron. It typically fails and shorts out, causing the oven to not heat. Not worth fixing since the cost of the magnetron is typically as much as a new oven.

Posted on Sep 16, 2010

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Sounds like the magnatron has failed. This is the component that produces the microwaves that heats the food.

The cost of the magnatron is about 95% of the cost of a microwave oven. Most people don't, for this reason, replace the magnatron, they replace the whole oven.

There is a possiblity that the circuit that provides power to the magnatron is faulty and you need to take it apart, find the proper electrical leads and test them with a volt meter. To do this you have to remove it from its mounting and take it appart. It is a fairly lengthy process however.

Posted on Sep 16, 2010

  • Aruna Singh
    Aruna Singh Sep 16, 2010

    It's your wish. If you wan't to put in any more repair cost on this article. As an expert that was my advise and I stand on it.

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By the way, you should always press "Stop" before opening the door of a running microwave. Otherwise, the door switches will prematurely fail.

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You have a faulty door safety interlock switch. I wish you would have searched your problem here before you spent all that money on the magnetron. I have answered this question dozens of times here at this site.

When the oven runs but doesn't heat, more often than not it is nothing more than a faulty micro switch in the door latch system. When the switch doesn't work properly, the oven doesn't know the door is closed. If the door isn't closed, the oven will not energize the magnetron. Capacitors and magnetrons are **** and expensive answers but these items are extremely tough. It is the tiny contacts in the micro switch that can not stand the repeated abuse given them when we (read me in that number too) open the oven while it is energized causing a repeated flash across the contacts.

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