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[quote=maui4max;792127]I have a GE Spacemaker JVM3670SK02 which works but does not heat. I replaced the magnetron. Both the capacitor and diode tested fine. Fuses are fine. There is power to the HV transformer.  I disconnected the capacitor and then powered up the microwave and tested the output voltage of the HV transformer using a cheap multimeter. I found there was high voltage for about 2 - 3 seconds and then nothing, nada, zip.  I'm not an appliance repair person but this doesn't seem right.  What is the best way to test the transformer?  I don't want to spend almost $200 for a new one if it's not necessary.

Thanks.[/quote]

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Last 10 Posts (In reverse order)
Gene	Posted: Thursday, January 3, 2013 9:57:12 AM(UTC)
	Hello, Very likely the transformer has interturn short circuit. It's very hard to diagnose because of special equipment needed. The only solution is to replace the transformer. You can order it from APP for $167.27 - The HV transformer Part number: WB27X10867 Here are the breakdown diagrams and Microwave parts for GE JVM3670SK02 - AppliancePartsPros.com Gene.
maui4max	Posted: Tuesday, January 1, 2013 2:50:35 PM(UTC)
	I have a GE Spacemaker JVM3670SK02 which works but does not heat. I replaced the magnetron. Both the capacitor and diode tested fine. Fuses are fine. There is power to the HV transformer. I disconnected the capacitor and then powered up the microwave and tested the output voltage of the HV transformer using a cheap multimeter. I found there was high voltage for about 2 - 3 seconds and then nothing, nada, zip. I'm not an appliance repair person but this doesn't seem right. What is the best way to test the transformer? I don't want to spend almost $200 for a new one if it's not necessary. Thanks.

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