Question about Jenn-Air JMC7000 Microwave Oven
How do I fix a microwave that does not heat up items?
The microwave makes a loud buzzing noise and does not heat the item up. There is an odor when it is running. The ordor is like you smell when a electical appliance burns out. The control panel, lights, and turn table are working.
The noise is coming from the high-voltage transformer being overloaded
by something shorting it out. Either the magnatron or the
high-voltage capacitor and diode. Replace the capacitor and
diode then if still not working, replace the magnatron. Its only
affordable if you do it yourself - buy the part on EBAY - lookup
Hope ya fix it!
Posted on Jan 06, 2008
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Posted on Jan 02, 2017
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It sounds like the magnetron may have
either failed or is not being supplied with the extremely high
voltage required to run it.
Make sure the !!!!capacitor is discharged!!!!! before attempting any sort of repair.
Check the door interlock switches first then the high voltage diode with either an AVO model 8 on high resistance range for short circuit, the capacitor can fail and go short circuit, the feed fuse on the primary of the high voltage transformer and then finally, the magnetron is best checked by substitution.
Hope that helps.
Dec 28, 2010 | Jenn-Air JMC7000 Microwave Oven
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.
Nov 09, 2010 | GE Spacemaker JVM1640SJ Microwave Oven
Jul 02, 2010 | GE Spacemaker JVM1640SJ Microwave Oven
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