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Makes loud buzzing won't heat - Whirlpool MH7140XF Microwave Oven

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

Microwave Oven Basic Troubleshooting Tips

heatman101

Posted on Sep 15, 2010

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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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Feb 03, 2016 | Whirlpool Accuwave Microwave Oven

1 Answer

My microwave no longer heats anything and also makes a really loud buzzing sound when i attempt to use it.


The problem is most likely caused by a defective magnetron that "heats the food" is loading down the high voltage transformer causing it to make a loud buzzing sound. The cost to repair (depending on make and model) will probably approach the cost of a new microwave oven when you factor parts and labor.

Jan 23, 2011 | Microwave Ovens

1 Answer

Kenmore microwave Model No. 721.62463201 runs but does not heat and has a terrificately loud buzz. All lights displays are normal


Hello there:
There's no heat, but it buzzes loudly When the microwave won't heat, but you hear a loud buzz, you usually have a defective power diode, high-voltage capacitor, or magnetron. I recommend that you consult with a qualified appliance repair technician for help in determining the problem and deciding what to do about it.
And if you have your warranty for this you can use it to ok
Hope this helps best regards mike

Nov 19, 2010 | Kenmore Microwave Ovens

1 Answer

Sharp R-7A82, buzzing/no heat


buzzinsg / humming / loud or louder than normal .is probably the mag / it has failed and the trans is making that noise . if older than 5 yrs I would replace ans the mag is 100.00 + and w / labor you have paid for a new on but have the old one .**** ..

Dec 23, 2009 | Sharp R-630D Microwave Oven

1 Answer

My microwave makes a loud buzz when switched on


dear!! its the problem of ur heating system!! it make buzz coz the capacitor is goin to fire and up and u r providing gr8 curretn..chek the switch and chek it up!!

Nov 04, 2009 | Microwave Ovens

1 Answer

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

1 Answer

Makes a loud buzzing noise and does not get hot


Have seen this many times.

Sounds like a bad CAP since a bad diode would blow the fuse and a bad mag would likely do the same thing.

Since yours is making the loud 60hz buzz you need to replace the capacator that will likely fix the problem. A $10 fix

Jan 06, 2009 | Kenmore 62622 Microwave Oven

1 Answer

Microwave makes loud buzzing sound when on and no heat


Have you tried putting a cup of water in it and cooking on a low power level? If it buzzes only when it is on the cook cycle, that would narrow it down. More detals might help us help you, including the model number.

Mar 20, 2007 | Kenmore 62622 Microwave Oven

1 Answer

Mwave made loud buzzing noise then didn't heat up anymore


When there's a loud buzz like that, it does not heat, and does not blow the fuse, it is usually a defective magnetron. Did it sound something like someone making a "gurgling" sound into a coffee cup? I think this has a a one-year warranty, with n five-year warranty covering the magnetron. You can find a local Amana-authorized servicer here: http://amana.com/amana/jsp/portalhttp.do?cs=0&BV_UseBVCookie=Yes&NextPage=7

Mar 03, 2007 | Amana AMV1162 Microwave Oven

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