Question about Panasonic NN-T990SA Microwave Oven

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Panasonic GD576M microwave oven

Hi Gurus,

My microwave oven keep on blowing fthe main fuse when I press the "Start" button. Please help me to diagnose the problem. TQ in advance

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3 Suggested Answers

MicrowaveSvc
  • 8820 Answers

SOURCE: Sharp R-510AK Microwave Oven Fuse Blows

If it went dead almost immediately after pressing the Start pad, that\'s usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that\'s usually a failing high-voltage transformer.

Here are some links you or a friend can use for test help, but read their safety warnings first:

http://www.microtechfactoryservice.com/cap_test.html
http://www.microtechfactoryservice.com/diode.html
http://www.microtechfactoryservice.com/mag_test.html
http://www.microtechfactoryservice.com/xformer.html


You can probably find an exploded view by entering your FULL model number here: http://www3.sears.com (the 3 is correct)
You can order Sharp parts from Sears or from Tritronics at http://www.wehaveparts.com
We\'re happy to help and we appreciate your thoughtful rating of our answer.

Posted on Jan 13, 2008

WhIzAtIt
  • 136 Answers

SOURCE: Panasonic dimension 4 microwave/convection oven

Does this unit have a turntable? If so does it turn when on?

Posted on Sep 24, 2008

Daniel S
  • 4323 Answers

SOURCE: My microwave oven has failed. Model: Panasonic

Hi

If there is no noise coming from inside the unit and everything else seems to be working fine then first test the door switch with a voltmeter, if the door switch tests fine then please post back for further assistance.

Daniel

Posted on May 03, 2011

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If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

You can find links to helpful exploded view diagrams and part ordering help here.

I recommend that you bookmark that link to your favorites.

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If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

Here are some links you or someone you know can use (in order given) for test help, but read the safety warnings first:
http://www.gallawa.com/microtech/cap_test.html
http://www.gallawa.com/microtech/xformer.html

The best place to order parts is Tritronics. You can also call them at 866-779-5835.

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

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If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

Here is a link you or someone you know can use to test it, but please read the safety info:
http://www.gallawa.com/microtech/cap_test.html

You can order Panasonic parts from Tritronics here or by calling 866-779-5835, but if you don't find what you're looking for there, try 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 it went dead almost immediately after pressing the Start pad, that\'s usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that\'s usually a failing high-voltage transformer.

Here are some links you or a friend can use for test help, but read their safety warnings first:

http://www.microtechfactoryservice.com/cap_test.html
http://www.microtechfactoryservice.com/diode.html
http://www.microtechfactoryservice.com/mag_test.html
http://www.microtechfactoryservice.com/xformer.html


You can probably find an exploded view by entering your FULL model number here: http://www3.sears.com (the 3 is correct)
You can order Sharp parts from Sears or from Tritronics at http://www.wehaveparts.com
We\'re happy to help and we appreciate your thoughtful rating of our answer.

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