Question about GE JVM1790 Convection / Microwave Oven
For a week no power at all oven totally dead. outl5et checked and is ok
also fuses and breakers in apt are ok. Fan power spontaneously
came on once for 5mn and then went off spontaneoulsy.
power buttons and all buttons unresponsive. totally dead.
If the hood vent exhaust fan came on
by itself, that was due to excessive heat on stove top, a failure of
the hood TCO (thermal cutout / thermostat) or a problem on the control
circuit board (smart board) which we regularly repair for customers nationwide by mail for $39.95 postpaid in about a
week with a one-year guarantee.
There should 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.
At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.
In this model, there are three TCOs which could be open, rendering the oven dead: The bottom TCO (not to be confused with the hood TCO, which should be normally open) the heater TCO and the magnetron TCO.
Also, the fuse should be checked in the unit.
Accessing some components for testing and possible replacement will require you to remove the oven from the wall.
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.
You can find helpful exploded view diagrams and order parts by entering your full model number from the tag on the oven here.
After you look into this, if you still need help, please write back with more details.
Feel free to contact me directly (and please remind me of your full model number) for more information & help or see our Web site.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
William E. "Ed" Miller, AS-EET
Posted on Feb 15, 2009
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