Question about Panasonic NN-S532 1200 Watts Microwave Oven

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Microwave turns off by itself after being on for 3 seconds

I have a 1200W Panasonic model NNS532WF Microwave, and it turns off by itself after being on for 3 seconds. I would appreciate any help in fixing this problem.

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  • pinuss Mar 27, 2009

    I have the same model, and it also turns itself off after 3 seconds,

    how did you manage to fix it?

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2 Answers

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See if this describes what's happening:

  • Put in time, push start and unit runs for 2 seconds, relay clicks, unit goes off. Cook time on display goes off and clock time comes back. Bad upper interlock switch and charred connector
If so, see http://www.microwavedisplay.com/safety.txt and
http://www.microwavedisplay.com/disassembly.txt

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.

It 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.

Posted on Mar 06, 2009

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We think it is a problem with the door latch cause when this happens with ours, if we open the door and close it again and reset it, it seems to work ok. my son is having the same problem with his. seems to be a common theme here

Posted on Feb 10, 2014

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