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Does the Panasonic microwave, model #NN-SD 987s have reports of leakage or recalls? We are having weird symptoms and are trying to find the cause. It is coming from our house because we feel much better when we stay elsewhere. We just purchased a carbon monoxide detector and that is negative.

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6ya6ya
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Posted on Jan 02, 2017

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MicrowaveSvc
  • 9047 Answers

SOURCE: Microwave shuts off after 3 seconds

Although your model number doesn't seem to show up, the NNS950-series units are powered by an high-voltage inverter. And yours has failed. While an inverter (switched-mode power supply) is more efficient from a power consumption standpoint, it is more complex, thus more statistically prone to fail. These should only be examined and worked on by someone who has the necessary technical qualifications. Seriously. Often the machine-soldered connections in a microwave inverter are too weak, so they eventually fail, especially if heat is high in the area. They sometimes fail catastrophically. When not catastrophically damaged, you may hear clicking or squealing and may smell an electrical odor, which is sometimes obscured by the cooling fan. Sometimes a whole new inverter is cheaper than the time and labor required to fix the old one. If a technician is willing and able to troubleshoot and repair the inverter to component level, it will may be expensive, but may be worth it, especially if he or she will resolder and reinforce connections as needed as part of a thorough repair. That could easily make your inverter beter than a new one! You might be able to get some verbal estimates if you call Panasonic-authorized appliance / microwave repair shops and ask then specifically about inverter component-level repair and simple inverter replacement costs for your exact model number.

Posted on Dec 28, 2006

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MicrowaveSvc
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SOURCE: Operators manual for NN-ST656W Panasonic

Your search is complicated by the fact that this is an Australian model.

Your manual and other documents related to this model can be downloaded from this page.

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

Posted on Aug 03, 2008

  • 1 Answer

SOURCE: Panasonic NN-H264 1200...stops after 3 seconds

I found sufficient information elsewhere.

Posted on Feb 13, 2009

fieldy14
  • 456 Answers

SOURCE: Overheating Panasonic NN-E225M

i have seen tisquite a lot, simply try and keep open space behind and ontop and u will be ok.

Posted on Jul 05, 2009

  • 1 Answer

SOURCE: Door Release Button not working on Panasonic Microwave NN-T664SFT

The problem I had experienced with the Door not opening easily will be resolved by removing the micowave oven top cover with a tamper proof torx head, replacing the door switch and reinstalling the top cover.

Posted on Jan 20, 2010

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The door is either out of adjustment, the door switches are out of adjustment, or the door/hinges are damaged. If the door switch assembly can be adjusted to fix the problem, then make sure the door closes as snugly as possible. As any repair to a door can increase the amount of microwave leakage, which can cause possible health issues for you, it might be wise to, at the very least, have a technician do a radiation leakage test on the unit once the door problem is repaired.

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My Panasonic microwave NN-C944S starts for 2-3 seconds, then stops. No message whatsoever. What could be the problem? Thanks.


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Overheating Panasonic NN-E225M


i have seen tisquite a lot, simply try and keep open space behind and ontop and u will be ok.

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Panasonic microwave


You mean it's dead, or won't heat? What is the exact symptom?

Please post that, then we can suggest the solution. Thank you.

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Another Microwave that shuts down after 3 seconds of microwave operation


This model uses an inverter to produce high voltage. That symptom is an usually indication of a problem with the inverter. Due to the lethal voltages involved, I do not recommend that a person without training and experience ever work on these models. And of course at less than 1 year, this would still be under warranty if you have your sales receipt. 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!

Jan 24, 2007 | Panasonic NN-P294SF Microwave Oven

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