Question about Frigidaire GLMB209D Microwave Oven

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Noise problem whenever I turn on the microwave there is a loud noise that appears to be coming from the fan area.

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Re: Noise problem

Do you mean the hood / vent fan? If so, it may be failing, or there may be an obstruction in it.

Yours may have a fan-like stirrer located above the cover in the ceiling of the microwave. Is that what you mean?

Is it heating and working properly otherwise?

Please reply back so we can help further.

Posted on Dec 05, 2007

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Coleman EB15A - Buzzing noise from transformer area, no heat or fan

see this causes and proceed. God bless you
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.

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

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.

Oct 18, 2012 | Microwave Ovens

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Magic Chef MCO153UBF microwave

There are two things that come to mind, the magnetron is starting to fail, or the strapping has come loose on the fan motor housing, unplug microwave oven and remove top, [several screws] carefully inspect the fan for any loose mounts and tighten.

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The GE Spacemaker Microwave Oven model JVM1540 makes a loud fan noise whenyou turn it on. Sounds like the exhast fan but it not?

It sounds like from the description when it is running the noise comes from the magnetron, some microwaves are louder than others, but this could be an early sign the magnetron is going.

Mar 13, 2012 | Microwave Ovens

1 Answer

The fans on this microwave will automatically turn on when I have more than one burner on the gas range going. The fan is horrendously loud and will not allow me to shut off for 2-3 minutes regardless if I...

That's typically normal operation. The microwave has a thermostat which turns on the hood vent exhaust fan at a certain temperature to protect the controller.

Your owner's manual will cover vent fan operation.

If for some reason you don't have yours, you can download Whirlpool owner's manuals and installation instructions here.

I always recommend that you use the vent fan whenever you're cooking on the stove top to keep heat, steam, and grease out of the controls and door panels.

If - above and beyond this - the fan has a problem, that could make it excessively loud. Some are just loud though, it's hard to judge without actually hearing it.

You can contact Whirlpool customer service with your model number via that link above and ask them about the loudness. They may be able to tell by listening over the phone if it's abnormally loud.

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

Apr 28, 2011 | Whirlpool MH7130XE Microwave Oven

1 Answer

My microwave is making a loud buzzing noise and there was some charred areas inside on side wall

The loud noise is probably the magnetron makign the noise. The charred areas on the wall are from possible grease or food particles arching and burning the cavity. Alot of times there is a cover on the wall it burns. it would need to be replaced, as well as sand and paint the cavity area that is damaged with m/w grade paint.

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Danby microwave does not heat food and makes loud constant noise

IF the noise is a sound coming from the oven area, its the megatron tube. Typically, replacing the megatron tube is more expensive than replacing wiht a new unit and a new warranty.

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Ge above range microwave, when it is turned on it makes a rattili

is this noise a loud noise or low. and tell me the make and what the model. please

Mar 20, 2009 | Goldstar MV-1501 Microwave Oven

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Cannot turn off fan

the fan has to stay on,thats the way they are made

Nov 30, 2008 | Kenmore 60654 Microwave Oven

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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:

You can usually find helpful exploded view diagrams and order parts by entering your full model number here:

Oct 13, 2007 | Microwave Ovens

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