Question about GE Spacemaker JVM1640SJ Microwave Oven

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Microwave working but wont heat up - GE Spacemaker JVM1640SJ Microwave Oven

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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 feed fuse on the primary of the high voltage transformer and then finally, the magnetron is best checked by substitution.
Hope that helps.

Posted on Nov 04, 2010

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Posted on Jan 02, 2017

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