Question about GE JVM1490 Convection/Microwave Oven

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Not heating up evrything else appears fine - GE JVM1490 Convection/Microwave Oven

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The magnetron may have either failed or is not being supplied with the extremely high voltage required to run it.
Make sure the !!!!capacitor is discharged!!!!! before attempting any sort of repair.
Check the door interlock switches first then the high voltage diode with either an AVO model 8 on high resistance range for short circuit, the feed fuse on the primary of the high voltage transformer and then finally, the magnetron is best checked by substitution.
Hope that helps.

Posted on Nov 06, 2010

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Posted on Jan 02, 2017

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Brand new bertazzoni speed ovene proso30x evrything works but the microwave won't heat?


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Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

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I have a problem with my microwave it is not warming things evrything looks fine the counter is also working but If you put something to warm it up it comes just the way you put


you may want to look at the magnetron inside the unit...this is what heats the food... there also sometimes a fuse attached to the magnetron it looks like a round disk with 2 wires attached to it normally the size of a quarter or a little smaller. it attaches to the magnetron which is a square looking metal object with wires coming off of it also... one of the 2 most likely the culprit...good luck to you

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Not heating up anything


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Unit will not heat up


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Mar 14, 2010 | Kenmore Microwave Ovens

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Frigidaire microwave evrything seems to work fine but does not heat anything


In all likelihood the mangnetron has failed, or perhaps even the Power Supply. or a fault that is shutting the system down for safety reasons You need to have it serviced by a reputable service centre/man. Ensure you get a firm "Quote" before proceeding, and remember these days the cost of repair can equal or exceed the price of a new one.

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Everything appears to work fine but it is not heating anymore.


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Microwave appears to work fine but will not heat at all.


Sounds like the thermal protector on the mag tube quit. It may have gotten too hot and opened up. That is the lesser of all the evils that can happen to a Microwave.

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