Do you have a wiring diagram?

You should first be sure your filters are clean and that your ductwork is clear.

See this link for a bulletin that may address your problem.

Otherwise, see this link in case you have a sticky door switch or relay.

You can find helpful GE exploded views and order GE parts here, and download GE owner's manuals and installation instructions here.
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http://wiki.brandoncurtis.com/w/File:Microwave_Wiring_Diag this is a good diagram of a standard microwave. ive pretty much only seen on single mag ovens. "F" usually has a single wire from the hvtrans. "FA" is usually the gang off the cap.

You can find helpful exploded view diagrams and order parts by entering your full model number here.

Or you can enter the original part number WB39X10003.

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Your temperature sensor has failed. You can find helpful exploded view diagrams and order parts by entering your full model number from the tag on the oven here. We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

We see (and repair) this a lot. The problem is on the control panel, which we regularly repair nationwide by mail for $39.95 postpaid in about a week.

Feel free to contact me directly (and please remind me of your full model number from the tag on the unit) for more information & help.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

William E. Miller, AS-EET
[email protected]
http://www.microwavedisplay.com

This is usually inverter trouble, but it may be the magnetron, controller, wiring, etc.

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.

To find helpful exploded view diagrams and get part numbers, you can just enter your full model number at the Sears parts site.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

I also have a JVM1190 and was baffled as to removal. My very handy brother solved it in two minutes. Above the door and keypad there is a long grill secured by two small squarehead (Robertson) screws. Remove the screws and grill and you will see on either side of the opening a long bolt. They go through to the back of the microwave where the support plate attached to the wall. The bolts have a slot in the middle for a flat blade screwdriver. Simply turn the bolt to release from the back plate. Make sure there is a helper underneath as the microwave is fairly heavy. Do the reverse for re-installation.

Go to geappliances.com. Select "Use and Care Manuals" under the Search drop down menu. Type in your model number in the adjacent window and select "Go". Your manual is available in a downloadable .pdf format. I hope this helps you.

You can find exploded view diagrams and order parts here: http://tinyurl.com/gv383 The most likely causes are: diagram 5, ref. 5 fuse diagram 7, ref. 2 thermistor diagram 2, ref. 5 control board If it's a problem with the control board, we repair them nationwide for $32.50. We also have important safety and disassembly information we recommend: http://tinyurl.com/yzjozk