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Panasonic Microwave model NN-S263 that works but only with weak power level. Takes much longer to heat food than normal. Is this a fuse, or do I need a new magnetron?

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Hi

The food is heated by the microwaves themselves and these microwaves are piped into the cooking chamber from the magnetron. The magnetron has electric charge sloshing back and forth in its tines. A small antenna uses that sloshing charge to emit microwave radiation. The water molecules in the food absorb this microwave radiation and turn its energy into heat.
However you'll need to check the voltage on your element terminals with a voltmeter,put the volt meter probes on both element terminals while its on and you should get 240 volts. If you do get 240 volts, that means your element is bad.If your line voltage is correct and it is slow to heat, then almost certainly your magnetron is failing.
If it's within the magnetron portion of the warranty but out of the original full warranty, then your manufacturer will cover the part cost, but not the cost to visit you or the labor charge to do the work.

Let us know if you have something more to know else accept the suggestion.
Thank You for contacting Fixya.com

Posted on Aug 02, 2010

  • mdbowker Aug 02, 2010

    Thanks for the answer. Because this is an over the range microwave, I suspect I have to remove it to get at the elements. Also, I would have to find a friend with a voltage meter to check it out.

    I'm thinking that I should probably replace the whole microwave, although because it's such a behemoth it won't be cheap.


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