Question about Panasonic NN-SN657SMicrowave Oven
Posted by Anonymous on
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Posted on Jan 02, 2017
This is usually caused by either a bad door switch, a loose door switch mount, or a problem on the control panel.
Even though a door switch clicks, it may still be bad inside.
Door switches are most often damaged by opening the door while it's cooking (instead of pressing Stop / Clear first) or food
/ grease debris in the switch.
If you or a friend decide to look into it, we have critical information on safety, disassembly and door switches at our site, linked here on Fixya: http://tinyurl.com/yzjozk
Posted on Nov 05, 2007
SOURCE: Panasonic Genius 800w locked
On many models, you press "Stop / Reset" three times.
A hard reset may help: Unplug it from the power line for a few minutes, plug it back in, set the clock, then try again.
If you don't have your owner's manual, you can probably download it (or one that's very close) here:
If that doesn't work, you can contact Panasonic UK at http://panasonic.co.uk/customer-Support/svc-dealer-locator.asp
We're happy to help and we appreciate your thoughtful rating of our answer.
Posted on Dec 17, 2007
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.
Posted on May 26, 2009
Check for a circuit breaker on the back. If nothing, pull the plug and remove the case. Look for a blown fuse. If so, look for a shorted high voltage diode in the magnetron power supply or a shorted stirrer bearing located above or beside the cavity area where the microwaves enter. The stirrer is a metal fan-like device with a plastic bearing that often arcs internally. That shorts the microwaves out and blows a fuse. Replace the stirrer.
Posted on Aug 24, 2009
SOURCE: Panasonic Genius Sensor 1300W
See if this describes
Otherwise, if the digital programmer circuit / controller does not get a feedback signal from the inverter for a period of 3 seconds, the controller will stop the cook cycle.
That may be a loose connection in the wiring between the inverter, magnetron, and/or control board, or maybe one of those components has failed.
Due to the lethal voltages used and produced in inverters, I do not recommend that an inexperienced person work on these.
You can find an authorized Panasonic servicer here.
In Canada, you can find an authorized Panasonic servicer here.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Posted on Aug 30, 2009
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