Question about Panasonic NN-S543BFW Microwave Oven

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NN -S543BF runs for 23 seconds or so and shuts off and does not h

NN -S543BF

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3 Suggested Answers

MicrowaveSvc
  • 8820 Answers

SOURCE: My Panaosmic microwave model number

The 22 seconds is the giveaway.

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.

Posted on Aug 08, 2008

EwingElect
  • 276 Answers

SOURCE: Shuts off after 23 seconds....

In most cases when the microwave stops @ 23 seconds it's the Magnetron which has failed, and is shorting to earth.

Either that or the magnetron isn't getting the right signal from the inverter board. It gives it 20 seconds to get the right signal or it shuts itself off.

Posted on Apr 04, 2009

  • 8404 Answers

SOURCE: just quick working no warning. no power.

Remove the cover and check the fuse that should be on the floor near where the power cord enters the cabinet.

Thanks for your interest n FixYa.com

Posted on Jan 27, 2010

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Just quick working no warning. no power.


Remove the cover and check the fuse that should be on the floor near where the power cord enters the cabinet.

Thanks for your interest n FixYa.com

Jan 27, 2010 | Panasonic NN-S543BFW Microwave Oven

1 Answer

Shuts off after 23 seconds....


In most cases when the microwave stops @ 23 seconds it's the Magnetron which has failed, and is shorting to earth.

Either that or the magnetron isn't getting the right signal from the inverter board. It gives it 20 seconds to get the right signal or it shuts itself off.

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The 22 seconds is the giveaway.

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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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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