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Gloria DiDiodato Posted on Jun 16, 2019
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My Panasonic microwave model NN-SD-277 turns on but quits immediately - less than one second. Any thoughts on what it might be?

1 Answer

Steve Pack

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  • Panasonic Master 7,128 Answers
  • Posted on Jun 16, 2019
Steve Pack
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No one can tell you without looking at it. You need to ask yourself how old is, what did you pay for item what does a new similar model cost, You can look at other brands = Ask yourself what do you cook in it, do you need all the features s and the size, Personally i would replace it.

5 Related Answers

MicrowaveSvc

William Miller

  • 9179 Answers
  • Posted on Nov 05, 2007

SOURCE: MICROWAVE TURNS ON WHEN DOOR IS OPENED.

This is usually caused by either a bad door switch, a loose door switch mount, or a problem on the control panel.

Even though a door switch clicks, it may still be bad inside.

Door switches are most often damaged by opening the door while it's cooking (instead of pressing Stop / Clear first) or food
/ grease debris in the switch.

If you or a friend decide to look into it, we have critical information on safety, disassembly and door switches at our site, linked here on Fixya: http://tinyurl.com/yzjozk

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MicrowaveSvc

William Miller

  • 9179 Answers
  • Posted on May 22, 2008

SOURCE: panasonic microwave oven model nn-p994sf

In most cases, this is a problem with the inverter or a bad magnetron.

Due to the lethal voltages used and produced, I do not recommend that an inexperienced person work on these.

I would recommend that you contact your nearest Panasonic-authorized servicer. You can find one here.

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

MicrowaveSvc

William Miller

  • 9179 Answers
  • Posted on Jul 19, 2008

SOURCE: Panasonic NN- A712 combination Microwave 1000w - Switches off after 20 seconds

The 22 seconds is the giveaway.

In most cases, this is a problem with the inverter or a bad magnetron.

Due to the lethal voltages used and produced, I do not recommend that an inexperienced person work on these.

I would recommend that you contact your nearest Panasonic-authorized servicer.

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

Anonymous

  • 1 Answer
  • Posted on Oct 21, 2008

SOURCE: Panasonic Model No. NN-S933BF Microwave Oven

could it be that i didn't follow the manuel because i got it second hand or is it because something is wrong with it,and i have to get it fixed.

Anonymous

  • 1 Answer
  • Posted on Feb 13, 2009

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

I found sufficient information elsewhere.

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