Question about Panasonic Microwave Ovens

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Panasonic nn-sd277. the only thing that seems to work is the clock and the timer. If you try to get it to work there is snap and it quits. Ours was made in may of 2010 and purchased shortly after that

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  • Panasonic Master
  • 12,223 Answers

Follow this steps and fix it. God bless you


  1. Controller is confusedA power surge or random non-reproducible action of the universe may have resulted in the controller's program ending up in an infinite loop. Pull the plug for a minute or two to reset it.
  2. Defective Interlock switchesThis can result in the controller thinking the door is open and ignoring you.
  3. CleaningCleaning solutions (spray cleaner) may have gotten inside and shorted out the touchpad or controller. If this happens remove the touchpad, let it air dry for a few days, and then attach it back on the microwave.

Posted on Oct 21, 2013

6 Suggested Answers

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  • 2 Answers

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Panasonic NN-C994S stop 2 sec. after I press Start.

Sounds like the power inverter

Posted on Apr 18, 2008

  • 1 Answer

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

I found sufficient information elsewhere.

Posted on Feb 13, 2009

  • 52 Answers

SOURCE: NN-A574SBBPQ - Microwave fans & turntable not working

2 fuses in a panasonic does not sound enough.
have you checked the main incoming power protection fuse normally 10amp or higher.
most panasonics have approx 4 fuses so keep on looking

Posted on Feb 21, 2009

MicrowaveSvc
  • 9047 Answers

SOURCE: i have a panasonic slimline combi NN A554W which

, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

Then you unplug the keypad (as per the photo below) and move the circuit board into your frame.

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

34374fd.jpg

Some connectors on the relays may have a lock:

positivelock.jpg
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://www.microwavedisplay.com/safety.txt , http://www.microwavedisplay.com/disassembly.txt and http://www.microwavedisplay.com/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 many Panasonic owner's manuals for free download here.

You can find an authorized Panasonic servicer here.

In Canada, you can find an authorized Panasonic servicer here. If you're not in the US, see Panasonic.net.

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

Posted on Oct 06, 2009

joust
  • 7 Answers

SOURCE: Panasonic NN-C980B stopped working. Blown fuse.

Sometimes when the mag shorts it takes out the inverter. I would measure the mag leads to ground and they should be open or 20M or so. If you have both a mag and inverter bad it's probably time for a new oven.

Posted on Jun 02, 2010

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Related Questions:

1 Answer

How do I set the clock on a Panasonic microwave nn-e271wm


To set the clock, you need to press Timer/Clock twice. Then press the 10 Min keypad several times until you get to the correct hour. Then press the 1 Min keypad as needed to get to the closest 10 minute period below the current time. Finally press the 10 Sec keypad several times to reach the current time. Then press Timer/Clock once to exit the time set feature.

Panasonic has the manual for the NN-E271WM on their downloads page: http://www.panasonic.eu/Downloads/en_GB/popup.html . Enter the model number and then click View. You will need to accept the Panasonic Terms Of Use and click View again. The direct link to the manual is currently http://tda.panasonic-europe-service.com/docs/2z5845f124z3z39cabz656ez706466z25z9709ff8b3ba329b0c218b9bf248a6442e93022b3/tsn3/data/ALL/NNE281BMBPQ/OI/912715/NN-E271WME281BME281MM.pdf . See page 21 in the manual (23 in the PDF) to see the procedure.

I hope this helps.

Cindy Wells

Dec 05, 2016 | Panasonic Microwave Ovens

1 Answer

I have a panasonic model nn-sd277 microwave. I changed the fuse and now it has power again. The fan and light all work. It trips my breaker and sometimes blows the fuse when you try to heat anything.


time to take it to an appliance repair shop for a quote
it is blowing fuses and tripping breakers because it has a serious short in the electrics

Jan 03, 2016 | Panasonic Microwave Ovens

1 Answer

How to reset time


To set the clock, press
"Clock"
once
or
"Timer/Clock"
twice
(depending
on your keypad)
.
The colon symbol (:) will flash.
Enter time of day.
The time appears
in the window; the colon continues
to flash.
Press
"Clock"
or
"Timer/Clock"
again - colon stops flashing; time of
day is set !

Nov 16, 2015 | Panasonic Microwave Ovens

1 Answer

Why isthe fan on my new panasonic Genius over the range microwave is noisy NN-SD277


Check to see if the vent is not jamming the motor. It could be something fell into the fan blabes. It could be a noiy motor and this would be a warranty issue.

Oct 11, 2014 | Panasonic "NN-SD277BR 2.0cuft, 1200 Watt...

1 Answer

Oven door on PanasoniPanasonic microwave Model NN-SD277 won't open when pressing open button


I just had that problem. It is the plastic workings. One of the plastic posts that holds the pivoting lever had to be epoxied. That plastic rejects crazy glue, don't waste your time. Just epoxy and as much as you think can fit under the electronics and the metal plate you will have to pull out.

My suggestion is take pictures of every step so that you can hook all the electrics back up. There are some testy switches that must be unsnapped too.

www.ianklepsch.ca

Oct 08, 2012 | Panasonic Microwave Ovens

2 Answers

How do I get my Panasonic Inverter microwave out of demo mode? I think my toddler might have hit something to put it in demo!


Hello Two options to try: a) Press the Clock / Timer button 3 times b) Unplug, wait a few seconds, then re-plug to power up with the factory settings. You will need to reset your clock and any favourite settings.
This should work with all Panasonic Microwave models.
Good luck

Aug 10, 2010 | Panasonic NN-H275 Microwave Oven

1 Answer

NN-A574SBBPQ - Microwave fans & turntable not working


2 fuses in a panasonic does not sound enough.
have you checked the main incoming power protection fuse normally 10amp or higher.
most panasonics have approx 4 fuses so keep on looking

Feb 10, 2009 | Panasonic NN-S961 Microwave Oven

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