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Panasonic NN-SN657S won't turn ON

Have had this for just over a year. Please help. (Have checked circuit breakers and outlets.Both are fine).

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  • jrgammel Sep 23, 2008

    Panasonic NN-SN657S micro wave oven worked fine for 18 months. Then the control panel went dark and key presses do not respond.

  • William Miller
    William Miller May 11, 2010

    Sorry but what do you mean by "won't turn on"?

    Can you describe your problem in detail?


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Posted on Sep 25, 2008

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1 Answer

Where is the fuse on Panasonic NN-S252


You may have to remove the cover on the microwave to find a fuse. It may not be either in a fuse holder or soldered into a the circuit board. be sure it is not plug up when you check.
if you find it be sure and replace with the fuse with same current rating.

Aug 01, 2014 | Panasonic NN-S252WF Microwave Oven

1 Answer

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IS IT POWER UP.
please rmoove the cover and check the fuse also.
is it work?????
nuwan

Jan 11, 2009 | Panasonic NN-S540BF Microwave Oven

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No power to Panasonic NN-S252 microwave oven


follow the incoming mains lead into the microwave their is a small pcb with a fuse their check this first

Nov 14, 2008 | Panasonic NN-S254BF Microwave Oven

1 Answer

It stoped


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.

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

You can find an authorized Panasonic servicer here.

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

Nov 01, 2008 | Panasonic NN-S542 Microwave Oven

1 Answer

F-82 flashing


there is a problem on a hv side which has blown a fuse.you need to use a multimetre to check to see if there are any shorts.there is a protector doide which sits across the hv capacitor which can cause this problem but this normally indicates that the magnetron is gone,hope this helps

Aug 20, 2008 | Panasonic NN-SN657S Microwave Oven

3 Answers

Panasonic NN-CS596S Convection Combi Steam Oven


The first thing I would suggest is a hard reset. Unplug the unit for a minute or so. Then plug it back in, set the clock and try again.

Let us know if the hard reset does not fix it.

If it stops at 16 seconds and is a sensor model, it probably has a defective humidity sensor.

If it stops after 22 seconds, that means the controller has detected a problem, usually a problem with the inverter or a bad magnetron.

If you do indeed have a problem, Since it's less than one year old, it should be fully covered under warranty. I'd suggest contacting the manufacturer to get it fixed free.

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

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

Aug 16, 2008 | Panasonic NN-SN657S Microwave Oven

1 Answer

Panasonic Inverter 1200W - NN-SN676S


That code indicates a problem with the magnetron, inverter or control board.

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:

http://www2.panasonic.com/webapp/wcs/stores/servlet/vServiceLocator?storeId=15001

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

Nov 28, 2007 | Panasonic NN-SN657S Microwave Oven

1 Answer

Panasonic NN-S953 Microwave Problem


It sounds like a problem with the inverter, control unit (circuit board) or high voltage transformer. I would recommend first that you (or a servicer or electrician) measure the actual line voltage at the outlet. It may be too low, or you may have a tarnished breaker or bad connection between the breaker and the outlet. Then try something like a toaster or toaster oven in that outlet and see if it toasts bread properly. Toasters consume a lot of current, so they are good load testers for outlets. Another good test is a hair dryer. Due to the lethal voltages involved, 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. Also, you can save about $50 by removing it from the wall and taking it to the shop. It's really a two-person job for safety's sake, and having the original installation info helps a lot. If you still have questions, please feel free to follow up. I appreciate your thoughtful ratings to my reply.

Aug 21, 2007 | Panasonic NN-S953 Microwave Oven

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