Question about Panasonic NN-L531WF Microwave Oven

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I have a Panasonic microwave oven NN-L531WF. Countertop, 1100 Watts. It's 8 years old. Used about 5 times a day to heat water for a cup of coffee (60 seconds). Problem: All of a sudden, it runs only 3 seconds, then stops and goes back to zero (0). This happens with any time punched in, 1 minute or 2; 40 seconds; 15 seconds. It starts OK, but stops every time after 3 seconds. Questions: (1) What causes this? (2) Is it worth to pay lots of $$$ to have it repaired, or should I just throw it away and get a new one? Thanks for any useful suggestion. -- Rey

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Posted on Jan 02, 2017

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MicrowaveSvc
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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: start but shut off after

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 04, 2008

  • 1 Answer

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.

Posted on Oct 21, 2008

MicrowaveSvc
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SOURCE: Countertop light will not go off on Panasonic NN-P294SF

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 or so.

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, cooling fan, turntable, and/or inside light operation, too.

Details of our service are at our Web site, along with a video showing how to remove a typical over the range control panel assembly in under 5 minutes.

Feel free to contact me directly with your brand, full model number and symptoms.

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 Oct 11, 2009

  • 1 Answer

SOURCE: Panasonic NN-T994SF Microwave Oven quits after 15 seconds

my microwave shuts off after a few seconds. is there a fuse that needs replacing?

Posted on Nov 24, 2010

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How to make pizza in nn-s215mf


Problem with pizza in a MICROWAVE is the
mass of the pizza is not adequate to absorb the
radiation... Energy is returned to the ($50)
MAGNETRON significantly shortening the
LIFE-CYCLE of the OVEN.

If you must warm a slice of pizza or a pat of butter
you will be big $$$$ ahead adding a cup of water and
boiling water at the same time...

Have a cup of tea, broth or instant coffee too....
(big savings)

Repair manuals ($5)
http://www.panasonic.owner-manuals.com/NNS215MF-service-manual-PANASONIC.html

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https://www.amazon.com/s/ref=nb_sb_noss/158-8787537-8510360?url=search-alias%3Daps&field-keywords=nn-s215mf+magnetron&rh=i%3Aaps%2Ck%3Ann-s215mf+magnetron

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Start but shut off after 5 seconds.panasonic microwave oven model NN-L531WF


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.

Jul 04, 2008 | Panasonic Microwave Ovens

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