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Help, my Panasonic NNA724M Combination Oven will no longer microwave. I can set the microwave going but after 20ish seconds the microwave stops and timer is replaced by the clock, without any audible warning. I've attempted to do numerous cycles at the 20ish seconds with a glass of water to see if the microwave is working at all but have had no success. It appears that although the timer does run for a limited time the microwave does not work, but I can not explain why the timer cancels after a short period. The oven & grill parts are still working correctly. Any help would be appreciated. Thanks.

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  • Tartarus Apr 02, 2008

    Hi there,

    thanks for the advise. I was hoping that it might have been just a simple PCB replacement, but I think I'd better call in the experts.

    Many Thanks, Tartarus.

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  • Microwave Ovens Master
  • 8,820 Answers

This is an inverter model, and when they stop after 20 seconds, it usually means a problem in the high voltage section, either the inverter or the magnetron.

If you don't have experience troubleshooting high voltage inverters, I recommend calling a pro.

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

Posted on Apr 02, 2008

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