Question about Panasonic NN-H764 Microwave Oven

1 Answer

White Panasonic Not heating. Shutting off every five seconds. When other features are selected e.g. pop corn, potato, etc. Will work for more than five seconds and then shut off, but still will not give off heat. The microwave is shutting off every 5 seconds. It is also not giving off any heat. If pop corn , or other features are selected, it will go for more than 5 seconds, but still will not give off any heat. Any suggesstions. 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
  • 9,098 Answers

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:

Posted on Nov 18, 2007


1 Suggested Answer

  • 2 Answers

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

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

How to pop popcorn

place a teaspoon of cooking oil in the pot and place on stove. Put a small amount of corn to be popped in the pot and the heat will do the rest. 1/4 cup of corn will probably overflow the pot so use small amounts first until you get the idea.

Feb 05, 2015 | Panasonic Inverter Countertop Microwave

1 Answer

Panasonic microwave problem help needed

Dan, That unit has an inverter, that is the power source for the part that puts out the Microwave energy called the Magnetron. The inverters are expensive and I stopped doing warranty work for Panasonic beacuse of them. Some pencil pusher somewhere though it was a great idea to replace 3 common fairly inexpensive parts. with that dang inverter. Microwaves have come down a lot in cost, I would buy a new one without an inverter. Sorry, wish I had better suggestions, I DO NOT LIKE THEM. LOL Sorry! Panasonic and their distributors are always out of them and there so expensive no one wants to stock them. I have had new ones sent to me that were already bad.

Aug 20, 2017 | Microwave Ovens

1 Answer

MCD1611W New, popping popcorn in glass MW corn popper. 3-4 minutes to pop. After popped I open the door and after a few seconds the MW shuts down completely, no lights, no response to pad pushing.

Popcorn is a low-moisture food which can cause a microwave to overheat, as can a failure of the cooling fan or blocked vents.

You should always turn a paper plate upside-down on the turntable (slightly off-center for better heating) and place the popcorn container on top of that.

The paper plate elevates the popcorn for better exposure to the energy and protects the turntable from excessive heat.

Placing food off-center instead of in the center increases exposure to the energy and prevents the same spot on the turntable from being overheated repeatedly, which leads to material fatigue and cracking.

It's also a good idea to put about 1/2 cup of water in a 1-cup microwave-safe container in the corner of the oven when cooking low-moisture foods like popcorn, bacon, and potatoes.

The microwave's magnetron has a thermal protector (thermostat, TCO, or thermal fuse) attached to it.

If the magnetron gets too hot, it can be damaged or destroyed, so the thermal protector opens and disconnects the power to the whole oven.

If it is a resettable device, the power will be restored when the device cools. If it is not resettable, the device must be replaced.

FixYa does not directly notify us experts of responses, so if you have other questions, please contact me directly.

- William E. Miller, AS-EET
Microwave Oven Control Panel Repair Nationwide
"Recycling by repairing since 1982"

May 28, 2017 | Magic Chef MCD1611W

1 Answer

What should my powerlevel be on on my microwave because it keeps burning my popcorn

Your power level should be on high, but you shouldn't rely on the oven to time the cooking. I have yet to find an oven that won't burn popcorn if it has a preset POPCORN button. Press it and walk away and next thing you know, you've got charcoal. You should always stick around while making popcorn. Stop the oven and take the bag out when the time between pops drops to 1 or 2 seconds. The corn will continue to pop on its own for a bit because of stored heat, but you won't burn it. You'll never get 100% of the corn to pop, so don't worry about unpopped kernels.

Feb 28, 2011 | Emerson MW8777W Microwave Oven

2 Answers

My Panasonic Microwave Genius 1300W will not heat up the food and the rotate dish spins and the sensor reheat will not heat up the food. Nor cook Pop Corn when pressing the buttons to 2:00 cook time. I...

Sounds like the magnetron has failed. This is the component that produces the microwaves that heats the food.

The cost of the magnetron is about 95% of the cost of a microwave oven. Most people don't, for this reason, replace the magnetron, they replace the whole oven which is probably what you will end up doing.

There is a possibility that the circuit that provides power to the magnetron is faulty and you need to take it apart, find the proper electrical leads and test them with a volt meter. To do this you have to remove it from its mounting and take it apart. It is a fairly lengthy process however.


May 14, 2009 | Panasonic NN-S960WA Microwave Oven

1 Answer

Sharp microwave losing cooking power

If the supply voltage is low it will take long time to heat foods. The second reason is the Magnetron. Since it is in the warranty period you can call at the sharp authorised service center. They will do it free of coast.

May 04, 2009 | Microwave Ovens

1 Answer

Microwave will not function properly.

The cavity thermal fuse may have failed. It is located on the top of the cavity.

Jun 13, 2008 | Microwave Ovens

6 Answers

Magic chef microwave shuts down

We had the same problem with our brand new Magic Chef. Before going through the trouble of taking it back I called Home Depot. After talking to a Home Depot Rep I am told that the overheat sensor is under the glass plate directly beneath the popcorn bag. Popcorn gets very hot and the heat of the popcorn causes the sensor to shut the machine down. I would imagine this would be the same for a baked potato.
Very poor design.
I was told to put a microwave safe plate down and put the popcorn bag on it. This should help to reduce the heat and not trip the sensor.
A safety sensor is great, but not if it keeps tripping the machine and shutting down!

Sep 02, 2007 | Microwave Ovens

Not finding what you are looking for?
Panasonic NN-H764 Microwave Oven Logo

Related Topics:

349 people viewed this question

Ask a Question

Usually answered in minutes!

Top Panasonic Microwave Ovens Experts

William Miller
William Miller

Level 3 Expert

9098 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers


Level 2 Expert

225 Answers

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

Answer questions

Manuals & User Guides