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GE JVM1640 Spacemaker Microwave Oven over the stove

How do you go about changing the Magnitron Tube in this beast? Where do you enter the microwave to get at it?

Thank you, Tom

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You don't. Get service for this. Incorrect installation is dangerous.

Posted on Dec 19, 2007


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We have a GE Spacemaker XL Microwave JVM1640 that was purchased in 2003 when we built our house. It worked fine on Friday and then Saturday morning, nothing. No lights, not control panel, no...

Hello Smoore66,

Your first microwave experience will be fine...
In order to take out your main power it has to be early
in your control circuitry. Power Board was a good guess
but there's also a main fuse... (usu: MAGNETRON).

If you are going to work on it YOURSELF ("diy")
be VERY careful to remember ALL COVERS
must be in place before EVER energizing the

Parts abound.... even on eBay & AMAZON
(I'll post APPLIANCE PART sales below)

there ae SERVICE GUIDES for sale...
Helpful hints & how to videos at the
parts houses (below).

I'd say it would be the ultimate in RECYCLING....
but a MICROWAVE is a dangerous appliance:
Weigh your options carefully

Good Luck

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with out a proper diagnosis, i would have to believe your magnetron is gone

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It made a loud noise and was starting to smoke.

Sounds like the magnitron is shot, I wouldn't attempt to use it anymore. When a magnitron goes bad it actually gets much stronger than the unit is made to handle.

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Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

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well randy you might want to check the diode and cap with a meter first before getting the mag tube. if both of those parts are fine. replace the tube.

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please check control circuitand related circuit and wiring mains fuse and related circuit

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