Question about Panasonic NN-SN657SMicrowave Oven
I have a Panasonic Microwave with Inverter, Model No. NN S750BAWF, Serial No. 6T71100156
Made July 2001
Please let me know if I can fix this. I want to use it just for a backup in my basement.
is usually caused by either a bad door switch, a loose door switch
mount (which are pretty simple problems to fix) or
problem on the control panel.
Even though a door switch clicks, it may still be bad inside.
Door switch or mount trouble is usually caused by slamming the door or by opening the door while it's cooking without hitting the Stop pad first.
There are plastic mounts inside the microwave which hold the door switches and onto which the door latches lock when you close the door.
The screws on these mounts may be loose. If they get too loose, the switches will not be activated properly.
Sometimes it's a broken tab on the switch holder, allowing the switch to rotate just out of position. This tab can be hard to see, since it is under the bottom edge of the switch.
If you or someone you know decide to look into it, we have critical information on safety, disassembly and door switches at our site, and our link is at our listing here on FixYa:.
If you only need a switch, you can order a universal type here for $5 postpaid.
The best place to order parts for this brand is Encompass (formerly Tritronics). Or you can call them toll-free at 866-779-5835.
If you think the problem is on the control panel, we repair these nationwide by mail for $39.95 postpaid in most cases in about a week or so.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Posted on Jan 03, 2009
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