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Magnetron splash cover missing, flat sheet of glass fiber material 3.5'' X 3.5'' Panasonic NN-S740BA Need to find a vandor on web, but what do you call this thing?

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  • n0cent0bs177 Jun 14, 2009

    Part not listed in the PDF file, panasonic not very helpful in determining part name.

  • n0cent0bs177 Jun 14, 2009

    Part not listed in the PDF file, panasonic not very helpful in determining part name.



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Go to and they will give you the part number and a local stockist

Or click on this link and on page 33 it will give you a local service center

Posted on Jun 14, 2009


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1 Answer

Where is the thermal switch located

If your model is NN-P295, then the service manual is here.

You can order Panasonic parts from
Encompass here.

At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

Most microwaves have a thermal cutout or thermostat on the magnetron, on the top of the cooking cavity, and often on the floor of the oven or above the bottom cover.

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

Jul 13, 2011 | Panasonic NN-P295SF Microwave Oven

1 Answer

Inside the NN-C2003S microwave on the right hand side is a paper like material that has deteriorated (90 mm long and 30mm high) and exposed an opening. Where can I buy a replacement cover or can I use...

It's made of milar from memory. 4 years ago I needed a new one as well as a magnetron and the ceramic tray, and even though I live in Sydney, LCS Electronics in Western Australia were by far the cheapest for the parts. Back then I think the milar was around $8.

Apr 01, 2011 | Panasonic NN-T888S Convection/Microwave...

1 Answer

It does not heat evenly ... trying to warm up a glass of milk- hot and cold "layers" in the glass ( 1, or 1.5 min, on high)

It sounds like there is a problem with the magnetron or its drive. Check magnetron only by substitution and the diode/capacitor with a moving coil meter on the high Ohms range.
Hope this helps.

Nov 06, 2010 | Panasonic NN-S548WA Microwave Oven

1 Answer

My microwave oven runs but there is no heat.

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

Microwave Oven Basic Troubleshooting Tips

Oct 15, 2010 | Panasonic NN-S740BA Microwave Oven

1 Answer

Panasonic NN-S740BA Microwave oven

In all likelihood the mangnetron is failed or failing, or perhaps even the Power Supply is faulty. You need to have it serviced by a reputable service centre/man.
Ensure you get a firm "Quote" before proceeding, and remember these days the cost of repair can equal or exceed the price of a new one

Jan 27, 2010 | Panasonic NN-S740BA Microwave Oven

2 Answers

Dead roach is in display window

If my wife saw that in our microwave, she would make me replace it after she finished freaking out two hours later. To get into the display, you will need to unplug the microwave and remove the cover to get into the display from the back. Watch out what you touch because you could get zapped by one of the capacitors.

Apr 04, 2009 | Panasonic NN-S740BA Microwave Oven

1 Answer

My panasonic microwave model NN T99)SAF is now missing a part. The part is on the inside of the microwave. It is a thin flat piece that is a cover over an opening for a fan or something . . .it is about 4"...

That is called the ceiling cover, also known as the waveguide cover, stirrer cover, or spatter shield.

It will definitely need to be replaced. It provides important protection for the magnetron.

You will need the following parts:

B20554U00AP ceiling cover
A90804U00AP canoe clip

The best place to order parts for this brand is Encompass (formerly Tritronics). Or you can call them toll-free at 866-779-5835.

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

Jan 30, 2009 | Panasonic NN-T990SA Microwave Oven

2 Answers

Stopped heating, shuts off before time expires

My panasonic microwave model # NN-S540BFW stops after 4 seconds after you hit the start button and cuts off on its own. What is wrong with my microwave?

Jan 12, 2009 | Panasonic NN-S763BF Microwave Oven

1 Answer

Faulty magnetron

I would contact Panasonic about this and tell them your story.

That is one way it can happen, but things just fail, too.

Otherwise, we servicers would not be in business.

You do need to be sure there is no grease or food particles stuck to the inside of the oven or stuck on or behind the waveguide cover.

You can call Panasonic at 1-800-211-7262 or visit here.

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

Sep 15, 2008 | Panasonic NN-S254BF Microwave Oven

1 Answer

Stops after 3 seconds - Panasonic NN-S252BF

may be magnetron spoiled or high voltage section problem,please check circuit andreplace damage parts...

Aug 14, 2008 | Panasonic NN-S254BF Microwave Oven

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