Question about Frigidaire FMV145K Microwave Oven

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Our Frigidaire microwave makes HORRIBLE sound when trying to pop microwave popcorn. It sounds like when a microwave "arcs" when metal is place inside, only much louder! It seems to only do this with popcorn, although I might have heard it do this very quietly on other occasions. When the noise occurs, I can also see lights flashing above/behind the ceiling of the microwave oven!!! It is kind of scary!

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6ya6ya
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Posted on Jan 02, 2017

  • 579 Answers

SOURCE: Frigidaire Microwave will not heat and is a little louder than usual.

High voltage parts are suspect. Need to put a voltmeter on the input (primary) side to the high-voltage transformer (big heavy iron thing in there) Should be getting 120Vac when it goes to cook cycle. Don't touch the other (high voltage) side of this transformer. If the power is there, you are looking at replacing either the magnatron or the high-voltage capacitor and diode. Its affordable if you do it yourself - buy the part on EBAY - lookup "universal magnatron"
Hope ya fix it!

Posted on Jan 11, 2008

Richie_asg1
  • 1036 Answers

SOURCE: I was boiling water on

Hi,

I would say the transformer for the power supply has probably shorted, or another major component in the power supply has shorted - This may be repairable if easily spotted, but most likely will not be cost efective.

Posted on Sep 04, 2008

  • 548 Answers

SOURCE: sparks pops odd burned smell

I would certainly take it to a repair shop if you want to try and salvage it. Until then keep it off and unplugged.

Posted on Feb 14, 2009

MicrowaveSvc
  • 9047 Answers

SOURCE: My Microwave oven makes a loud buzzing noise and

Quite often this is due to grease or food particles stuck somewhere in the cavity of the oven or stuck on or behind the waveguide cover.

The waveguide cover (also called a spatter shield) is usually on the right side of the cavity and is about the size of a playing card and often held in place by a plastic rivet.

In some models it is a larger stirrer cover type made of thicker plastic in the ceiling of the oven.

It can be fragile, and the metal edges of the oven behind it can be sharp, so be careful!

The cover and the metal behind it should be cleaned with a mild, non-ammonia cleaner.

If your waveguide cover is burned, it will need to be replaced.

It provides critical protection for the magnetron.

Your owner's manual may show you how to remove the cover.

You can download owner's manuals and installation instructions for Electrolux and Frigidaire here.

Otherwise, you can find links to helpful exploded view diagrams and part ordering help here.

I recommend that you bookmark that link to your favorites.


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

Posted on Jan 31, 2010

costelturcus
  • 43 Answers

SOURCE: Have a built in Microwave

VERIFIC? DAC? NU SA EXFOLIAT TEFLONUL DE LA DISCUL îNVâRTITOR, SAU IZOLATORUL DE MIC? DIN LATERAL DE LA TUNUL DE UNDE ?I D? LA MAS?....
BAFT? !!!

Posted on Jan 18, 2011

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SENSOR ERROR


Did it perhaps sound like someone gargling or growling into a coffee cup?

That's the kind of sound a magnetron often makes when it goes bad.

If you see flashing or arcing (sometimes more visible in a dark room) then there may be grease or food debris on or behind the plastic waveguide cover. It would need to be cleaned or replaced if it were burned.

If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info at our site, which is linked at our listing 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

Please write back with more details if you need further help.

We appreciate your thoughtful rating of our answer.

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