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Posted on Aug 02, 2011
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Panasonic Microwave Model # NN-SD986S is not working. When you try to turn it on, it will run for 2 seconds without spinning, and then the unit will shut off. What can be the cause? Is this repairable?

  • Anonymous Nov 24, 2011

    The glass tray keeps rotating even when the door is open. The When you try to turn it on, it will run for 2 seconds without spinning, and then the unit will shut off. Can this be repaired? how much would it cost? What is the cause?

  • Anonymous Jan 17, 2013

    I have the exact same problem.....any hope?

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  • Expert 185 Answers
  • Posted on Aug 04, 2011
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Probably a defective magnetron. very common failure.

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Related Questions:

0helpful
1answer

NN-SD986S runs 2 seconds then stops.

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://031d26d.namesecurehost.com/mwd/safety.txt http://031d26d.namesecurehost.com/mwd/disassembly.txt http://031d26d.namesecurehost.com/mwd/doorsw.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.

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.

If yours is not a Panasonic, please reply back with your brand and model number so we can help you.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
0helpful
1answer

Panasonic microwave model #NN-SD697S stopped working. Timer works for 2-3 seconds without motor running(heating) then turns off. Push start button, nothing happens.

@William Miller - where are you located if i'm interested in your help with the microwave repair? I'm having the similar issue with the Start buton not working for my Panasonic NNSD697SS. Thanks
0helpful
1answer

I need a manual for a nn-sd986s ?

You can download it here.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
7helpful
1answer

My NN-T994SFR Panasonic Microwave shuts off after 1 second.

My unit shuts off after about 2 seconds. It seems like it tries to go, but it sounds like it stops working and then 1 or 2 more seconds run off and it shuts down. Then you hit start again and it lights up inside and then shuts down. It's only about 2 or 3 years old.Any solutions?
0helpful
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Panasonic NN-P794SFR microwave unit that spins not rotating

there is a switch to turn it on or off. the turntable is replaceable
1helpful
1answer

Microwave cut off

the main control board is "seeingf" a high amprage draw from the inverter board . you have a problem with the inverter or the magntron . parts are more than a new unit . try to stay away from the inverter type , there just not ready for prime time . google "panasonic inverter reviews " and you will see just common your problem is good luck
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Turning off before finishing time time cycle

I have just had this problem where the oven will only run for 5 seconds and then turns off model #NNS561. Cant find any solution.
1helpful
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Panasonic microwave 1200

This model uses an inverter to produce high voltage. That symptom is an usually indication of a problem with the inverter or a bad magnetron. I do not recommend that a person without training and experience ever work on these models. You should be able to locate a Panasonic-authorized servicer here: http://www.pasc.panasonic.com/WhereTo/FindServicer.asp?Pass=1 I would mention the exact symptom when you call so the technician can bring a new inverter with him when he comes out to repair it. Might save you having it pulled into the shop. Good luck!
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