Question about Panasonic Microwave Ovens
It worked fine the day before leaving on a business trip. When I returned, there was no power on the display screen.
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Posted on Jan 02, 2017
SOURCE: No power
The door switches are designed to prevent the unit from running while the door is open. You probably have a blown fuse, and it's a white or dark grey ceramic fuse of 15A or 20A, available from local big box stores or appliance parts stores. The fuse is usually located on the floor of the chassis behind the control panel, or mounted in the same area as the door switches. Also, I'm really curious how the door switch got stuck while cleaning? That sounds scary...
Posted on Nov 13, 2006
Since the internal fuse blew, the problem has to be either a surge from the power source, or an intermittent or transient short at some point beyond the fuse. With the unit unplugged, I would first look at the varistor (surge absorber) on the control circuit board to see if it might have taken a transient. It may look charred, distorted, etc. Then I would look at the door interlock switches and mounts to see if the switches are clicking properly and if they are aligned and secure. The purpose of the monitor switch is to blow the fuse (and usually the breaker) if there is aan interlokc problem. Next would be a look at the condition of the wiring from the fuse holder all the way back to the power cord. Then just for good measure, I would test the power outlet. A toaster is a good high-current load to use. But I don't think the problem's in the wiring or breaker. If you or a friend decide to work on it, we have *critical* safety and disassembly info at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk You can find the wiring diagram, helpful exploded view diagrams and order parts by entering your base model number (without the suffix) here: http://tinyurl.com/gv383 Be sure to use a proper ceramic appliance fuse that's meant for the job.
Posted on Mar 13, 2007
SOURCE: panasonic nn-s255 wont turn on
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.
It 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.
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William E. Miller
Posted on Sep 12, 2009
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