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Question about Panasonic NN-T990SA Microwave Oven

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Microwave quit Microwave recently started "stuttering" and has now quit. After selecting power level and time + Start, the turntable turns a few degrees in each direction, the light comes on, and a few soft sizzles or pops are heard behind the button pad, then the unit stops. The clock counts down a few more seconds, then the unit goes off completely. The time returns to the clock as if nothing had happened. At first, simply restarting it would make it work. Now, the turntable doesn't even turn. The light inside comes on, the time starts counting down. After a few seconds, the sizzle sound starts for a second, and the unit stops. There is no electrical odor as if contacts are burning up. Has been a wonderful microwave. Worth fixing or should I buy a new one? Thanks

Posted by Keith Zimmerman on

  • Anonymous Mar 27, 2014

    When I push start it runs for just a few second then goes into cool down mode and nothing gets cooked

  • Anonymous Mar 27, 2014

    Samsung

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1 Answer

William Miller

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  • Panasonic Master
  • 9,179 Answers

I would suspect either door switches or an intermittent control circuit board, either of which can be repaired. Opening the door while cooking (without first hitting the STOP pad) is the primary cause of door switch failure over time. I have a text file on my site called "doorsw.txt" which helps in diagnosing and repairing door switch problems. You can find the file via a Google search. It will help you check and replace the door switches if you or an able friend is so inclined. In some cases, the problem is a bad connection or a bad relay on the control board. That's something we see fairly often, and we repair them for only $32.50 nationwide.

Posted on Oct 12, 2006

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