Frigidaire PLMV169DC Microwave Oven Logo
Posted on Oct 22, 2010

My Frigidaire microwave model# PLMVZ169GCC does not heat food. It runs and makes a loud noise, the plate turns but does not heat up. It is only 2 yesrs old. Thank you for your help.

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  • Posted on Feb 26, 2011
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Intermittent load noise (usual intermittent pulse noise is exaggerated) and the food is not heating though everything else seems to opperate normally: The Triac or Diode is capute.

You need to replace this part (@$30), but first need to discharge the capacitor, which is dangerous. I am going to give it a "shot", and not a "shock", all the punn intended. I will use an long insulated screw driver to touch both of the 2/3 tines of the adjacent capacitor, which will give a load "POP!" 2-3x to insure the stored energy is diffused.
Then, hopefully, simply replace the longe wire diode.
TaDa!

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We were using the microwave the other night and it started making a loud noise like the fan was running (although the fan was not). We let it sit for awhile and try to use it again but the noise came...

The loud noise and no heat means that the magnetron has failed. It the part that generates the microwaves that heat the food. When it fails it shorts out, causing the transformer to heat up. That is what was causing the burning smell. The cost of a replacement magnetron is around $130-150 range so it may not make sense to have it fixed.
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My Frigidaire microwave is less than a year old. It is making a loud noise while running. So it runs loudly but does not heat up food. Is there a simple fix or did I get a dud?

The symptoms of loud noise and no heat indicate a short in the magnetron or high voltage diode. Need to take it to a qualified repair, to figure out what the problem. The magnetron replacement can cost as much as a new oven. See what the warranty covers, maybe you might luck out.
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Microwave makes a loud noise while using.

Could you describe the noise?

It may be a noisy fan motor or a failing magnetron or high-voltage transformer.

If you or a friend decide to look into it, we have critical information on safety, disassembly and door switches at our site, linked here on Fixya: http://tinyurl.com/yzjozk

You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

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