Question about GE Spacemaker JVM1640SJ Microwave Oven

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Right after using the unit ,it stops ,light went out ,no power

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There are fuses inside the cabinet.You may have access to the cabinet from removing the screws at the back. The whole cabinet would sometimes be lifted whole and all the electrical parts would be exposed.

To remove the cover and access the fuses (and other electrical parts), do as follows:
1. Remove the exhaust fan unit top center rear: remove three screws and reach inside to carefully unplug the power cord, squeezing to release the plastic catches on each side of the plug.
2. The cover you wish to remove is a single piece of bent metal covering the sides and top of the unit. Unscrew all screws passing through this cover; this will be a total of 18 screws located on top, bottom, sides, and rear. Do not unscrew the two screws on the back panel that do not pass through the cover.
3. Slide the whole cover backwards about 3/4" and lift it clear.

There would be couple of fuses you need to check.You could use multimeter for the same. If the fuse is correct, then I was thinking if only the gas sensor is the problem , you should have at least digital read outs. Since there is non, you can check the low voltage transformer.
A small transformer form the power supply board which sometimes have a very fine wire which could just snap open. trace the voltage from the the cable to the fuse and to the transformer.

It is not the high voltage transformer. Please do not be confused. It is the low voltage one. Just to have a low voltage to work on the electronics.

By the time you are tracing the voltage, you could also check all the wiring connections if there is no corrosion specially on the PC board.

Note - You need to take care of all precautions.

Let me know,if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Posted on Oct 10, 2010


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

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

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