Question about GE Spacemaker JVM1640SJ Microwave Oven
If it's humming all the time, it may be a bad electrolytic capacitor on the control circuit board. We repair these all the time for $39.95 postpaid.
I'd first make sure it's not cooking when it's supposed to be off.
Just put a cup of water in it, shut the door, and let it set for a minute. Then see if the water's warmer.
If it is warmer, unplug the oven until it's fixed. That's probably a shorted relay on the control board, which we can also fix.
If it is not warmer, I'd bet you need the control circuit board repaired or replaced.
At our Web site, you can get details of our service, plus we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.
If you want to check the price of a new circuit board, enter your full model number here.
Let me know if I can help you further.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Posted on Aug 23, 2010
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Posted on Jan 02, 2017
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