Question about Panasonic NN-P294WF Microwave Oven
If it's intermittent or random, it may be a bad connection, usually on the control board or a loose fuse holder, or even an intermittent fuse.
You should do a continuity test on the fuse while it's in the holder (with the microwave unplugged, of course) then turn the fuse by hand or take it out and put it back in, then test it again.
If you remove the fuse, then press the meter leads against the ends, it can allow internal contact to be made and make a bad fuse appear to be good.
If you suspect the fuse at all, it's best to replace it.
With the microwave unplugged, if you can easily turn the fuse with your thumb & forefinger while it's in the holder, it has overheated and fatigued and the holder should be replaced.
Simply squeezing the holder's terminals together with pliers is not really a good solution.
If you or someone you know decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk
An intermittent door switch will not make the unit intermittently dead, it will only make it not heat, and depending on the model, it will also likely make the turntable and inside light not come on. But again it depends on the model.
You may need to clean and/or realign the door mechanism or door switch mounts.
This is especially true in case a user opens the door while it's cooking without hitting Stop first or slams the door. Both are big no-nos for a microwave.
The main parts that will kill the power are the fuse, fuse holder, or thermostat or thermal cutout, which are usually located on or above the magnetron and on the top of the cooking cavity.
Please feel free to contact me directly if you need more help.
We're happy to help and we appreciate your thoughtful rating of our answer.
William E. Miller, AS-EET
Posted on May 22, 2008
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Posted on Jan 02, 2017
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