Question about Panasonic NN-S762 Microwave Oven

1 Answer

Panasonic NN- S760BA heating problems

Our microwave was purchased in May 2000 and was working well until 2 days ago when we noticed that the food was heating a lot slower than usual. Something that used to cook in 9-10 minutes at 100% power is now taking 40-45 minutes and more. We tried changing the power levels, but there was no noticeble change. There's a new buzzing noise when the owen is working. The turntable, light, etc are all working. We've not had any other problems with it before. Since the unit is less than 7 years old, we're disppointed that we may need to replace such an expensive product so soon. Is there an economical solution for this? I find that comparative size owens from other manufacturers cost between $100-130, in which case it doesn't seem worth it to get this repaired. Does this model of Panasonic m.wave owen have severe problems? Any help/advice would be appreciated. Thanks.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Panasonic Master
  • 8,795 Answers
Re: Panasonic NN- S760BA heating problems

Chances are it has a bad magnetron. If you decide to have it serviced, I would definitely recommend that you contact a servicer who is authorized by Panasonic. You can find them here: Good luck.

Posted on Feb 20, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

2 Answers

Why does my microwave turntable turn when I open the door?

We recommend you have the microwave evaluated by an authorized service center.

Authorized service centers can be located in the below link.

May 01, 2014 | Panasonic NN-H965WF - Microwave Oven...

1 Answer

Take long time to Mack hot food

your magnetron is the heating element. it sends out microwaves that jiggle the water molecules inside the food causing them to heat. this is whats malfunctioning causing your problem. youll have to have a technician replace it

Jan 29, 2011 | Panasonic NN-T990SA Microwave Oven

1 Answer

Our Panasonic 1350 microwave no longer heats food.

Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

Microwave Oven Basic Troubleshooting Tips



May 13, 2010 | Panasonic NN-S963BF Microwave Oven

1 Answer

The microwave has worked very good but latley

check the thermostat mounted on the side of the magnetron,it has 2 wires on it and opens the circuit to the magnetron if it overheats,they can get weak and open too soon so the mag can't operate long enough to properly heat the food,to test it just bypass it bo tying the 2 wires together,then if it cycles properly just replace the part,don't leave it bypassed though because it is for fire safety

Mar 28, 2010 | Panasonic NN-S542 Microwave Oven

3 Answers

Panasonic Microwave NN-C980-B buzzing noise but it still works.

I have a 2003 Sears Ultra Wave microwave 721.63682300 with a similar problem. A few months ago it started giving off short buzzes when turned on. That stopped but then I noticed that everything took twice as long to heat up. After quite a bit of teardown&inspection I found a circuit break in the inverter board leading to ZD704 diode (pictured). I will now try to find a replacement diode to see if replacing will fix it. Thanks for your postings.


Feb 15, 2009 | Panasonic NN-C980 Convection/Microwave...

1 Answer

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.

Jul 01, 2008 | Panasonic NN-C980 Convection/Microwave...

2 Answers

Panasonic Microwave NN-A770S getting hot on right side externally

If you described this to Panasonic very carefully, and they said it's normal, then I would say keep using it until such time that you get other symptoms. The inverter has some parts mounted on a large chunk of aluminum called a heat sink. It draws the heat out of the parts and the heat radiates and/or convects away. This keeps the circuit parts from overheating. As long as you have good air flow through the vents, it sounds okay.

Sep 13, 2007 | Microwave Ovens

Not finding what you are looking for?
Panasonic NN-S762 Microwave Oven Logo

108 people viewed this question

Ask a Question

Usually answered in minutes!

Top Panasonic Microwave Ovens Experts

William Miller
William Miller

Level 3 Expert

8795 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers


Level 2 Expert

224 Answers

Are you a Panasonic Microwave Oven Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides