Question about Panasonic Nn-sd681s 1 2cuft 1200 Watt Microwave With Inverter

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Panasonic nn-sd681s shuts off after a few seconds sometimes wont come on at all

This is an intermittent problem. We thought it might have something to do with the door. I cleaned the door and the door frame really well with water. Opening and closing the door sometimes fixes the problem. The unit heats fine and everything else seems to work otherwise. We have had it about 1.5 years.

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

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Posted on Jan 02, 2017

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MicrowaveSvc
  • 9098 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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SOURCE: Door shut off malfunction

I have the same problem starting yesterday April 19. Have you gotten any answers.

Posted on Apr 20, 2008

MicrowaveSvc
  • 9098 Answers

SOURCE: microwave light door turn table works but does not heat up food

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.

Posted on Jul 02, 2008

MicrowaveSvc
  • 9098 Answers

SOURCE: Panasonic NN-P295 Cooktop Light not working

We see (and repair) this a lot. The problem is on the control panel, which we regularly repair nationwide by mail for $39.95 postpaid in about a week.

At our Web site, you can get details of our service, plus we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

This light failure often occurs when a bulb goes out and the filament shorts, or when the bulbs are removed or installed without first unplugging the oven from the power line. Either can cause such a failure on the controller.

This can often also affect the exhaust fan operation, too. The lights and fan can be inoperable or stuck on too.

Feel free to contact me directly (and please remind me of your full model number) for more information & help.

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

William E. Miller
prototech@usa.net
http://www.microwavedisplay.com

Posted on Jan 23, 2009

MicrowaveSvc
  • 9098 Answers

SOURCE: panasonic nn-s255 wont turn on

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.

It 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.

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

NOTE: The FixYa system is not currently notifying me when folks reply to my posts, so please contact me directly for more help.

William E. Miller
prototech@usa.net
http://www.microwavedisplay.com

Posted on Sep 12, 2009

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Hi, we have an electrolux builtin microwave.when on standby it occasionally makes a crackling noise not unlike a laptop or storage device when it looks for data. Microwave runs fine otherwise


You really need to be sure it's not running by itself - even intermittently - because that can cause arcing damage, or even a fire.

If you're not sure, leave the door open or the oven unplugged until you're sure it's not or it's fixed.

You can keep a cup of water in it and check it hourly over the course of a day to see if it coming on and actually heating.

It really shouldn't make any noise when idle except a gentle 60Hz hum.

For more free DIY and other help & advice, feel free to contact me via my site.

Please include FULL model number*, FCC ID number*, + detailed symptom information.
* on the tag in cooking cavity or around door frame or control frame or on back

William E. Miller, AS-EET
http://www.microwavecontrol.com
Microwave Oven Control Panel Repair Nationwide
"Recycling by repairing since 1982"

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You really need to be sure it's not running by itself - even intermittently - because that can cause arcing damage, or even a fire.

If you're not sure, leave the door open or the oven unplugged until you're sure it's not or it's fixed.

You can keep a cup of water in it and check it hourly over the course of a day to see if it coming on and actually heating.

You may have an issue with the door switches, the door switch mounts (see my help files here, here, and here), or a sticking relay on the board, which I regularly repair.

For more free DIY and other help & advice, feel free to contact me via my site.

Please include FULL model number*, FCC ID number*, + detailed symptom information.
* on the tag in cooking cavity or around door frame or control frame or on back

William E. Miller, AS-EET
http://www.microwavecontrol.com
Microwave Oven Control Panel Repair Nationwide
"Recycling by repairing since 1982"

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If this is an older oven, or an oven that has heated a lot of popcorn, or other low water content foods, then you might be looking at a magnetron that has become intermittent. The symptoms you describe, however, do not match the symptoms you usually see with this type of failure.

Based on your description of the problem, I'd investigate the possibility of an intermittent power relay. The contacts on these eventually burn and sometimes don't make a good connection. After the contacts first close, there're is an initial surge of current that might make the relay functional for a second or two, and then the damaged contacts no longer make contact.

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I thought I had answered this, but here goes again: :)

First of all, you can find helpful exploded views and the parts list here.

Hopefully the issue's something you can fix yourself by checking the door (taking it apart) and checking the latches in the frame of the oven.

You have to separate the door panels as shown in the photo.

9f32bc4.jpg

Or you can watch a
YouTube video (not a video I made) that demonstrates how it's done.

If the issue is with the door itself, and you cannot repair it, then you would have to order a whole new door since door parts are not available separately for this model.

You can order Whirlpool parts from the Pros here.

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

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We have the service manual at our site and you can download it free here.

You can order parts from the Pros here, our favorite supplier.

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Got the same problem. Still inquiring but I might have found a solution here : http://midwestapplianceparts.com/microwave-parts-537/whirlpool-microwave-parts-648/microwave-door-panel-663/whirlpool-microwave-door-panel-w-glass-4212.html
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