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Panasonic microwave (model NN-P295) power failure

Hi:
Our ''young'' (2+ year old) Panasonic NN-P295 microwave is totally dead now:
it happened when the night light was turned on: it immediately burned out with a bright flash and now the whole microwave is dead. (AC outlet still working good: I checked that).

Any ideas on what to check? (This is actually my mom's: I am going to go over soon and see if it has any fuses, and I can bring my voltmeter too to do some basic checks).

Thanks in advance for any input.

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Posted on Feb 17, 2010

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We see (and repair) this a lot. The problem is on the control panel, which we regularly repair nationwide by mail for $39.95 postpaid in about a week.

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.

This light failure often occurs when a bulb goes out and the filament shorts, or when the bulbs are removed or installed without first unplugging the oven from the power line. Either can cause such a failure on the controller.

If it's really bad, we will have to also replace the microprocessor, which will add $15 to the cost.

If we don't have the parts yours need in stock, it will take about 4 weeks or so to get them. Even though we order from a top-tier distributor, they have to order them from Panasonic Japan.

I stock microprocessor # MN101C54CEN.

You can look at your microprocessor to see what number is on it, and to look for a bump or other odd spot that would tell you it's been zapped, as in the photo below

We have one board in stock, part number F603L5V30AP for $50. If it fits your model, that may be the quickest / best solution for you.

Feel free to contact me directly (and please remind me of your full model number) for more information & help.

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

William E. Miller
prototech@usa.net
http://www.microwavedisplay.com

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Posted on Dec 13, 2008

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We see (and repair) this a lot. The problem is on the control panel, which we regularly repair nationwide by mail for $39.95 postpaid in about a week.

At our Web site, you can get details of our service, plus we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

This light failure often occurs when a bulb goes out and the filament shorts, or when the bulbs are removed or installed without first unplugging the oven from the power line. Either can cause such a failure on the controller.

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Feel free to contact me directly (and please remind me of your full model number) for more information & help.

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

William E. Miller
prototech@usa.net
http://www.microwavedisplay.com

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In most cases, this is a problem with the inverter or a bad magnetron.

Due to the lethal voltages used and produced, I do not recommend that an inexperienced person work on these.

I would recommend that you contact your nearest Panasonic-authorized servicer. You can find one here:
http://www2.panasonic.com/webapp/wcs/stores/servlet/vServiceLocator?storeId=15001

We're happy to help and we appreciate your thoughtful rating of our answer.

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