Question about Panasonic NN-S254BF Microwave Oven

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Panasonic NN S254BF

Microwave runs for 5 seconds then shuts down. can you tell me what the problem is

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Re: Panasonic NN S254BF

It sounds like one of the wires or serkits are loos so the electrisity is not getting to it all the way I would return it or take it apart and try to fix it your self.

Posted on Dec 30, 2007

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See if this describes what's happening:
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If so, see , and

Otherwise, 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.

That may be a loose connection in the wiring between the inverter, magnetron, and/or control board, or maybe one of those components has failed.

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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You can order Sharp parts from Tritronics at


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Panasonic Microwave

Since it's under warranty, I would contact Panasonic customer service for a free repair.

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

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