Question about Maytag Microwave Ovens

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Maytag microwave MMV5156AAQ isn't working

When you press start there is a very loud buzz, but no heating. All other functions seem to be fine.

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Most likely the microwave emitter (clystron tube) tube has burned out.

Posted on Jan 16, 2009

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Q - The microwave makes a loud "hum or buzz" noise but will not heat up the food?
A - 9 times out of 10 this is usually this is a bad magnetron, the other time is sometimes a bad high voltage diode. See components section.

Posted on Jan 16, 2009

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Do u get any error on display.

Posted on Jan 16, 2009

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1 Answer

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1 Answer

Microwave makes a loud buzzing noise


The buzzing sound could be from loose laminations on the high voltage transformer, or from loose mounting screws for the transformer. This requires investigation by a qualified technician as there are lethal voltages associated with the transformer. It could also be from a loose cover. First check that all the cover screws are tight.

Mar 21, 2014 | Electrolux Microwave Ovens

1 Answer

Frigidaire PLMV168K2 micro wave stopped heating food. Still has turntable and light functions. Seems to have more of a power load after initial start. The buzz is more intense than normal.


A loud buzz is a symptom of a shorted magnetron or high voltage diode. Would recommend that you take it to a qualified repair facility if you want it repaired, but if the magnetron has failed, the part costs can equal that of a new oven.

Dec 06, 2010 | Frigidaire PLMV168 Microwave Oven

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My 8 year old Maytag over the cooktop microwave does not heat food, but all other functions seem fine. There is a new, loud noise, similar to an electric motor that is seized.


Hi,
Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

Microwave Oven Basic Troubleshooting Tips

heatman101

//..//

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Hi. I have a Maytag mmv5207bcs Microwave. Pressed...


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My microwave became very loud and will not heat. it is 5 years old and happened suddenly.


If it is a loud buzzing noise it is either the diode or magnetron. Working with the high voltage of a Microwave oven I would never recommend anyone other than a trained professional to attempt this repair.

Apr 24, 2010 | Maytag 2.0 Cu. Ft. Over-the-Range...

1 Answer

Loader than normal noise but no heat,every thing else seems to function properly


If you are hearing a loud buzzing noise then it may be the Power Diode, Magnetron, or High Voltage Capacitor. This link will tell you how to test & replace the defective part. http://www.partselect.com/repair.aspx?appliance=microwave&part=no-heat

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Loud buzzing noise with Whirpool microwave oven when it comes on. All lights, heating and fan seems to work but not sure why loud buzzing. What is the problem?


The loud buzzing you hear is the sound of the magnatron tube.That is what emits the microwave radiation and buzzing should be normal. The mag tube may be nearing its end at witch time you will hear no buzzing and hence no heating of foods. Replacement can be costly depending on the model so most people just opt for a new one. Hope this helps

Jul 30, 2009 | Microwave Ovens

3 Answers

Ge microwave - making noise


I have a GE counter top microwave oven. When the oven starts cooking (the magnetron turns on) the oven makes a harsh buzzing noise. What is wrong and what should be done?

Mar 07, 2008 | Microwave Ovens

1 Answer

Constant Humm / Buzz but Works OK


I was going to suggest the low voltage transformer, but when you said it sounded like it was coming from the left side, that seemed odd. I have a stock transformer here I keep for test that is loud, but it works. Odd, eh?

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