Question about GE Microwave Ovens
It's almost certainly a shorted high voltage rectifier diode or a failed magnetron.
We have the service / repair manual for this model and have uploaded it to our site here for free download to help you.
It will give you safety info, step by step help in disassembly, troubleshooting tips, and part numbers.
Here are some handy links you or someone you know can use for test help:
(if it's not shorted or burned, it's probably okay)
At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.
There should be a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, testing, and locating components.
You can also find helpful exploded view diagrams and order parts by entering your full model number from the tag on the oven here.
If it's within the magnetron portion of the warranty (for this model it's 10 years from the date on the tag inside the unit) but out of the original full warranty (1 year), then your manufacturer will cover the part cost, but not the cost to visit you or the labor charge to do the work.
G.E. they will send you the magnetron to do it yourself. Call them at 888-239-6832.
Be persistent. You may have to speak with a supervisor.
If it is not within the magnetron warranty, you can find helpful exploded view diagrams and order parts by entering your full model number here.
Accessing some components (especially the oven cavity thermostat) for testing and possible replacement will require you to remove the oven from the wall and take off the outer cover.
If so, the installation instructions are very handy, and it's best to have two people since the microwave can be heavy and awkward.
You can download GE owner's manuals and installation instructions here.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Posted on Jul 26, 2009
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Posted on Jan 02, 2017
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