Question about Frigidaire PLMB209DC Microwave Oven

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Grinding or dragging noise (model # PLMB209DC)

My oven is only 1.5 years old and it has started to make a grinding or draggi6ng noise when running. Nothing else is affected. How can this be fixed?

Thanks!
Alla

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  • Frigidaire Master
  • 9,042 Answers

Unless it's a fan dragging (evidenced by reduced air flow) I would suspect the magnetron is failing.

Even though labor and the other parts are out of warranty, they still cover the magnetron for 10 years.

Their customer service department can help you:
http://www.frigidaire.com/support/support.asp

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

Posted on Feb 27, 2008

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

If you or someone you know decide to look into it, we have critical safety information and disassembly information at our Web site.

There should be a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, testing, and locating components.

Also 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.

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http://www.gallawa.com/microtech/diode.html
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http://www.gallawa.com/microtech/mag_test.html

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Some manufacturers will send you the magnetron to do it yourself. If nothing else, you can save about $75 for a home visit by taking it to the shop yourself.

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