Question about GE Spacemaker JVM1640SJ Microwave Oven
Generally, the most common causes of a failure to heat are:
- bad door switches or door switch mounts
- loose connection at the magnetron
- problem or loose connection on the control unit circuit board
- bad magnetron or other high voltage part (such as a shorted diode)
If you or someone you know decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and disassembly information at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk
You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383
Also, since you have a GE, there should also be a "mini-manual" hidden inside the unit behind the control panel, which is very helpful when troubleshooting.
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Posted on Mar 18, 2008
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Posted on Jan 02, 2017
SOURCE: ge jvm 1653 won't heat
You've got a problem in the microwave circuit, which could be one or more of the following components -
1) HV diode
2) HV Capacitor
3) HV transformer
I am leaning to the diode, but it would take further investigation to determine for sure. Diodes are cheap, as if the capacitor, and replacing those first would not necessarily be in vain if it turns out to be the transformer or magnetron. And I would be most inclined to say it's the magnetron before I would think transformer.
Reply back what you find or if you have more questions.
Posted on Feb 04, 2009
It could be a number of things, Burnt connections between the magnetron, Capacitor, Diode and transformer, Heater connections loose or burnt, Transformer, Capacitor Diode or Magnetron US. You need to strip it and find out if you are getting about 2000volts to the Mag, Are you getting approx 5volts across the heater terminals?? NOTE that the 2000 Volts can remain in the cap indefinitely and the voltage is LETHAL. IT WILL KILL YOU if you don`t take precautions. Ian
Posted on Aug 06, 2009
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