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Our Spacemaster Microwave can make occasional loud grinding or vibratory noises--deep and low sounds. Solution?

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If it has a turntable, the wheels are worn or dirty and are chattering. When I have this problem, I take out the turntable, clean up the floor of the oven, the bottom of the plate, and the wheels on the turntable ring. Then I push a small amount of paste wax (made by S. C. Johnson) onto the axles inside the wheels to lubricate them. (I've kept my worn-out turntable ring going for over 10 years by doing this.) If the turntable has a central post through the floor of the oven, the bearing may need cleaning and lubrication.

Other possible causes would be the bearings in the magnetron cooling fan or the microwave stirring fan in non-turntable models. Excessive dirt on fan blades can cause imbalanced running, which will also generate vibrations.

Posted on Dec 30, 2010

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1 Answer

Making loud noise when turning on to heat.


If there's a loud noise when you try to microwave food, then the current through the high voltage transformer is probably too high.
Most likely, this is being caused by failure of a component in the high voltage circuit. The most likely component is the high voltage rectifier, followed by the magnetron or high voltage capacitor. High voltage transformers occasionally do burn up as well.

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Microwace noise coming from top and flashing


dont use the microwave until you retrieve what dropped inside when you removed the port. The grinding is most likely a foreign object that is hitting the moving parts of the microwave and causing sparking. It can catch fire

Mar 09, 2014 | GE JVM1650 1000 Watts Microwave Oven

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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

Sharp sound bar buzzing


test this steps 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.

Read more: http://www.appliancepartspros.com/repair-help/microwave-repair-help.html#13#ixzz2hVe8AHvJ
http://www.appliancepartspros.com

Oct 12, 2013 | 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

Kenmore spacemaster will turn on, display appears to work, but food will not cook. Unit makes low whirring noise dissimilar to the standard noise. John


We have a sound clip of what a microwave should sound like when the cooling fan and high voltage section are operating here.

A loud buzz, hum, or groan is usually a shorted high voltage rectifier diode, but a sound like gurgling into an empty coffee mug is one symptom of a failed magnetron, and yet the mag can be bad without that sound.

Here are some links you or someone you know can use (in order given) for high voltage section test help, but read the safety warnings first:

http://www.gallawa.com/microtech/diode.html
(if it is NOT shorted or burned looking, it's probably fine)


http://www.gallawa.com/microtech/mag_test.html
(continuity can be good even though mag is bad!)


http://www.gallawa.com/microtech/xformer.html

You can find handy exploded views at the Sears Parts Site.

BUT once you have the part number from the Sears site, you can often get the parts cheaper
here.

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

Jan 09, 2010 | Kenmore Microwave Ovens

1 Answer

GE JVM1650 Microwave Making Loud Noise


hello Frank. Sorry to tell you that the magnetron is going bad and making that terrible noise. Since the inside of a microwave, even unplugged has up to 2000 residual and deadly volts of electricity I recommend either calling a pro or replacing the unit.

Jul 12, 2009 | Microwave Ovens

1 Answer

Kitchenaid KHMS155LSS 1000 watt microwave makes grinding noise


Chances are you have a bad stirrer motor or the stirrer blade is jamming or loose on the motor shaft.

Your owner's manual should tell you how to remove the stirrer cover to check it.

If for some reason you don't have your owner's manual, you can download it free here, as well as the parts manual for your model.

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

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

Jan 01, 2009 | KitchenAid KHMS155LSS 1000 Watts Microwave...

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