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Posted on Apr 20, 2008
Answered by a Fixya Expert

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Microwave turning off after 22 seconds of cooking time

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William Miller

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  • Microwave Ovens Master 9,179 Answers
  • Posted on Apr 20, 2008
William Miller
Microwave Ovens Master
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Joined: Sep 15, 2006
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And it's a Panasonic model with an inverter, right?

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.

You should have a one-year warranty on parts and labor and the magnetron itself should have about a 5 year warranty.

We're happy to help and we appreciate your thoughtful rating of our answer.

William E. Miller, AS-EET
[email protected]
http://www.microwavedisplay.com

5 Related Answers

Anonymous

  • 3130 Answers
  • Posted on Aug 25, 2006

SOURCE: Shuts Off after 22 seconds

Time to buy a new microwave as it sounds as if the control panel is defective. A new control panel for this micro will run about 95 to 120 bucks + labor depending on where you buy it. I happen to like slightly burnt popcorn as well!! Nothing wrong with thats, as they say great minds think alike.

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Anonymous

  • Posted on Mar 10, 2007

SOURCE: Microwave shuts off after a few seconds

We have had the same problem described here. We added a heave ceramic pie plate to the turn talbe and it now works 90% of the time. Without it almost never. The problem in one of its incarnations is clearly connected to the turntable.

VEKAT

Devabhakthuni Venkateswara Rao

  • 225 Answers
  • Posted on Sep 24, 2007

SOURCE: microwave shuts down after 5 seconds

chech the control panel and wiring and thermal sensors..

MicrowaveSvc

William Miller

  • 9179 Answers
  • Posted on Nov 17, 2007

SOURCE: GH7145XFB-1 not heating properly

Generally, the most common causes of a failure to heat are:

- bad door switches or door switch mounts
- loose connection at the magnetron
- problem or loose conneciton on the control unit circuit board
- bad magnetron or other high voltage part

If you or a friend decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and disassembly information at our site, linked here on Fixya: http://tinyurl.com/yzjozk

MicrowaveSvc

William Miller

  • 9179 Answers
  • Posted on Aug 02, 2008

SOURCE: Panasonic Model NN T964SF inverter

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.

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.

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

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


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Oven won't heat and shuts down after approx. 20 seconds

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 in inverters, 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.
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Microwave cooks for 30 seconds then turns off

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.
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If I put in cook time 3 minutes it only cooks for about 10 seconds then turns off

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.

According to a recent report we received, if it stops after 7 seconds, it has a problem with the inverter.

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.

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

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
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Microwave works for 30 seconds and then turns off

The first thing to try is a "hard reset". Unplug it from the power line for a few minutes, plug it back in, set the clock, then try again.

Let us know if the hard reset doesn't fix it.

We're happy to help and we appreciate your thoughtful rating of our answer.
0helpful
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Shuts Off after 22 seconds

Time to buy a new microwave as it sounds as if the control panel is defective. A new control panel for this micro will run about 95 to 120 bucks + labor depending on where you buy it. I happen to like slightly burnt popcorn as well!! Nothing wrong with thats, as they say great minds think alike.
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