Question about GE Spacemaker JVM1640SJ Microwave Oven
I hear a buzzing sound when I do anything to the microwave to cause it to use more power than the standby power. For example, when I turn on the surface lights, I hear a buzzing sound coming from behind the display. The lights come on, but not as bright as they should and the volume of the buzz changes when I go from high to low. I also get the buzz when I turn on the exhaust fan, open the door, or try to cook. Seems like a power supply problem.
Right. It sounds like either a bad connection on the control panel, or maybe a low or intermittent supply at the outlet.
I would try plugging a lamp into the outlet and see if it works well. That gives you a good low-current test. For a good high-current test, try a toaster or hair dryer.
You might also check the fuse and holder. It's pretty common for these fuses to get loose on the end caps and sometimes the holders may be loose.
You can usually find helpful exploded view diagrams and order parts by entering your full model number here.
There should also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.
It is turns out to be the controller, we repair these for customers nationwide with our guaranteed $39.95 service.
Please feel free to contact me directly if you need more help. And please mention your model number when you write.
We're happy to help you and we'd appreciate your thoughtful rating of our answer.
William E. Miller, AS-EET
Posted on Jul 20, 2008
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Posted on Jan 02, 2017
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Investigate these three areas if your microwave won't heat but you hear a loud buzzing or humming noise:
A diode is an electronic component that readily
passes current in one direction only and blocks the flow of current in
the opposing direction. If your microwave's diode has become defective,
your microwave will not heat and you will hear a buzzing noise. Test the
diode to determine if this is the cause of your problem. Replace it if
it is defective.
A capacitor is an electrical device which stores
electricity. A defective capacitor may be why your microwave is not
heating but you are hearing a buzzing or humming noise. The capacitor
will have to be tested to determine if this is the cause of your
problem. A defective capacitor will have to be replaced before your
microwave will work again. Make sure you discharge the capacitor before you test it, though.
A defective magnetron is the third possible cause of
why your microwave is not heating, but you can hear a buzzing noise.
Test your microwave's magnetron. Replace it if it is defective.
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