Question about GE JVM1660 Microwave Oven

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Microwave oven problem

GE Spacemaker JVM1660 over the counter microwave. About 6 years old. Suddenly stopped heating. Seems to work, and makes a humming noise when it runs, but nothing gets hot anymore. Is the magnetron dead? How I can I tell what the problem may be? Thanks.

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  • John Smith Jul 01, 2007

    Thank you for responding. I plan to open it up in the next few days and look at the things you suggest. (For now, I just brought in a second counter-top microwave I had in the garage!) Will update you after I look at it. Thanks again!

  • John Smith Sep 11, 2007

    Thanks to everyone for the helpful replies. I called the company - they said the Magnetron tube and the waveguide were gone, and I just had to replace the microwave - which I did. Cost nearly as much as a new one, with their "warranty exchange". Oh well. Thanks again.

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2 Answers

The most probably is the magnetron , when the capacitor is damage the equipment blown the fuse

Posted on Jul 01, 2007

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If your microwave is doing everything, but heating it could be any one of the following components: Magnetron HV Capacitor HV Diode HV Transformer This network works in conjunction to produce the high voltage required to heat. Taking live voltage measurements is dangerous and not recommended. You can, however, do resistance checks on the components with the unit unplugged to see if you can isolate the problem any further. The HV Diode should be mounted somewhere on or near the HV capacitor and will read an open in one direction and a relative short in the other. If you put a meter on the capacitor you should see a varying resistance as the capacitor charges and discharges. There should should be a wiring diagram inside your control panel with the resistance readings for the primary and secondary windings of the transformer and the filament of the magnetron. In a nut shell, you probably have either a bad magnetron or a bad diode. Those are the two components that fail more frequently. Of course, double check all your interconnecting wires too. Good luck and let me know if this helps.

Posted on Jun 23, 2007

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Posted on Jan 02, 2017

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Parts must be tested to find out what is wrong.

Remember that microwaves are potentially dangerous devices if not repaired properly, the job must be done by a competent person.
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Regarding parts, contact the seller here to purchase parts.

You can also order from MicrowaveSvc , they also provide parts.

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