Question about Panasonic NN-S952 Microwave Oven
My Panasonic countertop microwave oven (NN-S952-WF) of about 5 years of age went completely dead when my wife simply opened the door (a couple minutes earlier it had just completed cooking some food for 5 minutes with no problems).
I suspected some blown fuse inside the unit when I proved that it was not the breaker or wall socket or any external problem. After some GOOGLE investigation I confirmed that there is an 18Amp Ceramic fuse inside the unit. So I bought a 20AMP ceramic fuse (and a security torque socket to remove the back screws) and removed the cover and found the blown fuse and replaced it with the 20AMP fuse.
Upon plugging it in, the lights all came on and the keypad / instrumentation all looked normal and even opening the door - the oven light turned on. BUT, when I tried to cook something, the instrumentation showed that the cooking operation was active yet there was no fan noise and no magnetron power hum. After about 2-3 seconds, there was a slight click and the oven turned its cooking operation back off.
I tried it a few times, and the same thing happened.
I suspect there could be some kind of Case Opening Tamper Switch but when GOOGLING, I havent heard anyone mention this.
So does anyone have any idea why my microwave cooking operation has failed? Is this something that is fixable? or is it already time to replace my pretty young oven?
It is your short switch which is a microswitch located in your door latch assembly
Posted on Aug 03, 2010
If you haven't figured out this problem yet, had you considered the door switches. These are the most common part that fail, besides the fuse. The door switches are just to the left of the control board and there is usually 3 to 4 of them. Best to change all 4, as without a proper meter to test them with, just as easy to replace all of them. Definitely search around and check with any local microwave parts stores. Global Microparts is a local company out of Dallas, and they are extremely reasonable on their prices. They will ship anywhere. Hope this helps some. Good luck.
Posted on Jul 30, 2010
Sounds like a short in the microwave circuit. One or more of the following four components has failed -
Repair is not for the amateur, unless you know how to take things apart, and put them back together EXACTLY as the were found.
Parts are available on the Net, and you can get the P/N's off the old components to identify suppliers of the new ones.
Don't try and measure resistance of the diode. It's impedance is far too high to get a good reading. They're cheap anyway. Always replace the capacitor, they're cheap too. No way to test the magnetron, and the transformer is not easy to test either.
Posted on Jan 16, 2009
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Posted on Jan 02, 2017
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