Question about GE JVM1870 Microwave Oven
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Posted on Jan 02, 2017
With the symptoms you
have, I would most strongly suspect a shorted high voltage rectifier
diode or a bad magnetron.
The diode is a fairly cheap fix, and the mag will cost more and is more complicated to replace.
Here are some links you or someone you know can use (in order given) for test help, but read the safety warnings first:
http://www.gallawa.com/microtech/diode.html (if it is NOT shorted, it's probably fine)
http://www.gallawa.com/microtech/mag_test.html (continuity can be good even though it is bad!)
There should also be a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, testing, and locating components.
You can usually find helpful exploded view diagrams and order parts by entering your full model number here.
If it's within the magnetron portion of the warranty (usually 5-9 years) but out of the original full warranty (usually 1 year), then your manufacturer will cover the part cost, but not the cost to visit you or the labor charge to do the work.
If it needs a new magnetron, you'll have to remove it from the wall, then remove the outer cover. If so, the installation instructions are very handy, and it's best to have two people since the microwave can be heavy and awkward.
You can download GE owner's manuals and installation instructions here.
If you want to contact GE about having an authorized servicer look at it, or have them send you a magnetron, GE Customer Service is here.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Posted on Dec 07, 2008
You either have a bad magnetron tube (5 or 10 year parts warranty item through GE Factory Service 1-800-432-2737 or www.geappliances.com) or a shorted high voltage rectifier. I think the light being out is a secondary problem.
Posted on Dec 20, 2008
change the units internal ceramic fuse and try this,may just be a fuse or if new one blows then could be h.v. diode.capacitor,thermal fuse,magnetron tube
Posted on Nov 09, 2009
The magnetron is more than likely the problem, "heats food" cheaper in the long run to replace the microwave oven.
Posted on Jun 14, 2011
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