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My Panasonic microwave does not heat

The turntable turns and all the buttons are working, so what could be the problem?

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  • ?orgr?mur Gu?mundsson Dec 08, 2008

    The serial number is UN 1041404 Panasonic NN 5450B
    THE LIGHT COMES ON AND THE PLATE TURNS-NO ERROR MESSAGE ON THE SCREEN

  • William Miller
    William Miller May 11, 2010

    Does the light come on when it should be cooking?

    Are there any fault codes in the display?

    Please reply back with your model number so we can help you.


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  • Microwave Ovens Master
  • 9,098 Answers

With the symptoms you have, I would most strongly suspect a shorted high voltage rectifier diode or a bad magnetron.

The diode is a fairly cheap fix, and the mag will cost more.

Here are some links you or someone you know can use for test help, but read their safety warnings first:

http://www.gallawa.com/microtech/diode.html (if it's not shorted, it's probably okay)
http://www.gallawa.com/microtech/mag_test.html

Visit here (and click your part of the map) to find Panasonic authorized servicers or spare parts suppliers.

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


Posted on Dec 08, 2008

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