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I was microwaving frozen broccoli in my Kenmore microwave and I heard a loud grinding noise which made me turn to look and saw that the interior was on fire. Once I stopped it and opened the door it went out but now I'm afraid to use it again. Not sure if I should just cut my losses and buy a new one or try and have this one fixed. It's only three years old.

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  • gillville482 May 11, 2010

    Buy a new one. they are disposable these days.

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The magnetron is failing is what it sounds like...what is the make/model?

Replacement is usually the best option in cases like this btu I need to know the make and model # before I can say that for sure.

Posted on Sep 10, 2009

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Posted on Jan 02, 2017

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When microwave is started, why does it make a loud buzzing sound--like a Skil saw sounds?


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1 Answer

Microwave occasional loud buzz


make this test and fix it. God bless you


  1. MagnetronIf your microwave is emanating high pitched or growling noises during operation, the magnetron could be going bad. Normally a nearly silent part, the magnetron uses high voltage and induces the frequency required to cook food. Although normally not a safety hazard to operate, this is a sign that the magnetron is failing and will need to be replaced as soon as possible.
  2. Exhaust fan motorIf your microwave is making a very loud humming noise during operation, it could possibly be the exhaust fan motor. If defective the part will need to be replaced to silence the appliance once more.
  3. Stirrer motorAnother leading cause of a noisy microwave is an expired stirrer motor. With use this part becomes worn and makes a loud grinding noise, which is usually a leading indicator that the part needs to be replaced. The stirrer is a metal blade that is slowly turned by the motor. This action disperses the microwave energy in a random pattern, which heats the food evenly. If the stirrer motor is determined to be nearing expiration, it should be replaced to halt the grinding noise.
  4. Turntable motorA very common cause for a noisy microwave is a worn out turntable motor. This is a relatively easy repair and will put an end to the noise once replaced.

Nov 14, 2013 | Jenn-Air JMV8208AAS Microwave Oven

1 Answer

GE microwave occasionally buzzes loudly.


make this test and fix it. God bless you

  1. MagnetronIf your microwave is emanating high pitched or growling noises during operation, the magnetron could be going bad. Normally a nearly silent part, the magnetron uses high voltage and induces the frequency required to cook food. Although normally not a safety hazard to operate, this is a sign that the magnetron is failing and will need to be replaced as soon as possible.
  2. Exhaust fan motorIf your microwave is making a very loud humming noise during operation, it could possibly be the exhaust fan motor. If defective the part will need to be replaced to silence the appliance once more.
  3. Stirrer motorAnother leading cause of a noisy microwave is an expired stirrer motor. With use this part becomes worn and makes a loud grinding noise, which is usually a leading indicator that the part needs to be replaced. The stirrer is a metal blade that is slowly turned by the motor. This action disperses the microwave energy in a random pattern, which heats the food evenly. If the stirrer motor is determined to be nearing expiration, it should be replaced to halt the grinding noise.
  4. Turntable motorA very common cause for a noisy microwave is a worn out turntable motor. This is a relatively easy repair and will put an end to the noise once replaced.

Nov 14, 2013 | Microwave Ovens

1 Answer

Frigidaire Microwave heats everything except for food


Your fianc? employed a surefire method of killing a microwave oven. A simple perusal of the manual would have revealed the recommended cleaning method.

Feb 26, 2017 | Microwave Ovens

1 Answer

Burning smell and loud grinding noise


If that grinding noise sounds a little like gargling into a coffee cup, that's a defective magnetron.

You can download GE owner's manuals and installation instructions here.

You can find helpful exploded view diagrams and order parts by entering your full model number from the tag on the oven here.

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

Jan 09, 2013 | GE JVM1441 Microwave Oven

1 Answer

Microwave made a loud grinding noise while heating a cup of coffee for 1 minute,now everything is shut off. We checked the curcit breakers all ok, and there is power going to it!


see this causes and fix it. God bless you
Turntable Motor If the microwave is loud or noisy the turntable motor might be worn out. This is a common problem and relatively easy to replace.
Stirrer Motor If the microwave is loud or noisy the stirrer motor might be worn out. The stirrer is a metal blade which slowly turns around, deflecting the microwave energy in a random pattern inside the microwave oven. As the motor nears the end of its useful life it begins to make grinding noises. The microwave will not heat food evenly without this stirrer, the motor should be replaced.

Exhaust Fan Motor If the microwave is loud when running the fan motor might be

Magnetron If the microwave is loud or noisy only when cooking, the magnetron tube might be defective. The magnetron uses high voltage, high current DC power to generate the microwave frequency that cooks the food. Under normal circumstances the magnetron is nearly silent. However if it is damaged or nearly burned out it can begin emitting high pitched or growling noises. It's not normally dangerous to use a microwave oven when it makes these noises, but they are an indication that the magnetron is almost dead and will need to be replaced.
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Oct 15, 2012 | Microwave Ovens

1 Answer

Saw sparks and heard a pop noise when we hit ''start'' on microwave


We just had the same problem - spark, loud noise, and then dead. At first I replaced the ceramic fuse and the same thing happened immediately. A local appliance store tested the transformer and found it was "bad." I purchased a used transformer from the store for about $35. I installed both of these myself with little effort.

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1 Answer

Kenmore 721.80524500 makes a buzzing, grinding noise


Your problem is due to the "magnetron" arcing to the wave guide within the microwave. Picture someone arc-welding stuff together inside the microwave casing, that's essentially what's happening. It is a fire hazard and you should stop using the microwave immediately. As far as I know, there isn't a recall on that particular model (though there was on another similar Kenmore/Whirlpool model) so if it's out of warranty, you're out of luck.

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Kenmore microwave range hood model 665.61612100 manufactured 2001


The problem is likely on the control panel, which we repair nationwide for $39.95 postpaid.

This light failure often occurs when a bulb goes out and the filament shorts, or when the bulbs are removed or installed without first unplugging the oven from the power line. Either can cause such a failure on the controller.

This often can affect the exhaust fan operation, too. The lights and fan can be inopoerable or stuck on.

If you or a friend decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and

disassembly information at our site, linked here on Fixya: http://tinyurl.com/yzjozk

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1 Answer

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