Question about GE Spacemaker JVM1640SJ Microwave Oven

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Burning odor, no heat

Last night I noticed a burning smell coming from my GE spacesaver microwave. In addition to the smell, the unit makes a slightly different noise when running and will not heat food. Any suggestions for cheap fix or do I buy a new one???? Any help would be greatly appreciated.

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Re: burning odor, no heat

A burning smell along with a different sound (growl) USUALLY indicates a breakdown in the High Voltage Side. This is not a direct short (short circuit) or the line fuse would have blown shutting everything down. The High Voltage Side is made up of-- The Secondary ,or High Voltage Side of The High Voltage Transformer, A High Voltage Diode, A High Voltage Capacitor, and The Magnetron. If The High Voltage Transformer is the problem it will smell like a florescent light ballast burning, and will smell each time you turn on the MW. A HV Diode burns and opens, thus no more smell. A HV Capacitor usually does not burn nor does the Magnetron. There is no Cheap-Fix unless you can see that the HV Diode is burned into and you can get to it to replace. CAUTION: Always unplug from power before attempting to repair. NOTE: If you replace a Diode make sure it goes back in the same direction it came out. Yes there is a front and back.

Posted on Jan 26, 2008

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