Question about GE Spacemaker JVM1640SJ Microwave Oven

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Panasonic Microwave Problem

What ever setting l have on my combi microwave it cuts off after 21 seconds! microwave shuts off a few seconds after starting,it is only 2 years old and cost alot what could be wrong with it?

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  • clarky84 Sep 23, 2008

    panasonic inverter microwave. shuts off after three seconds

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  • 8,820 Answers

Even though these are different symptoms, the same part may be causing both.

If the digital programmer circuit / controller does not get a feedback signal from the inverter for a period of 3 seconds, the controller will stop the cook cycle.

If it stops after 22 seconds, that means the controller has detected a problem, usually a problem with the inverter or a bad magnetron.

Due to the lethal voltages used and produced, I do not recommend that an inexperienced person work on these.

You can find an authorized Panasonic servicer here.

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

Posted on Sep 27, 2008

  • Mario Monfette Nov 15, 2011

    Very fast and useful answer, Thanks

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My GE microwave will only run for 21 seconds and then it shuts off. Even if I try to heat something by running it for 21 seconds multiple times, it doesn't get anything warm.


I've heard of this is Panasonic microwaves but not in GEs.

To allow us to help you effectively (at no charge), please post a NEW problem to FixYa, and please include your brand name and the full model number from the tag in or on the unit, as well your symptoms "only run for 21 seconds and then it shuts off".


For those readers with a a Panasonic that stops after 22 seconds, that means the controller has detected a problem, usually a problem with the inverter, controller, magnetron, or a bad connection from one or the other.

Due to the lethal voltages used and produced in inverters, I do not recommend that an inexperienced person work on these.

You can find an authorized Panasonic servicer here.

In Canada, you can find an authorized Panasonic servicer here.

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

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In most cases, this is a problem with the inverter or a bad magnetron.

Due to the lethal voltages used and produced, I do not recommend that an inexperienced person work on these.

I would recommend that you contact your nearest Panasonic-authorized servicer.

You can find one here:
http://www2.panasonic.com/webapp/wcs/stores/servlet/vServiceLocator?storeId=15001

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