Question about GE Spacemaker JVM1640SJ Microwave Oven
Chances are if there is power available to the unit and it will not power up, the internal fuse has opened. This is not a user serviceable type repair. that being said, remove the cover, near the power supply is a ceramic fuse, test/replace the fuse reassemble. if the fuse continues to blow it will most likely be easier to replace the unit than to repair it
Posted on Feb 03, 2009
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Posted on Jan 02, 2017
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Aug 09, 2011 | GE JVM1640 Microwave Oven
It sounds like the magnetron may have
either failed or is not being supplied with the extremely high
voltage required to run it.
SAFETY IS PARRAMOUNT
This is a job for a professional but if
you are safety clued up, here's instruction.
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 or moving coil meter on high resistance range for short circuit, (DVM's won't show the fault!), 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.
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