Question about Whirlpool Microwave Ovens

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Loud noise vibrating

Microwave (NOT IN USE) last night made for the 1st time a very loud consistent noise while vibrating for over a minute or 2, then stopped.

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  • Whirlpool Master
  • 9,085 Answers

If and when an oven is coming on or doing anything by itself, this is very dangerous and can result in a fire.

So until it is repaired, please leave it unplugged or leave the door open when it's not in use, and of course one should never leave a microwave unattended while cooking.
Please post a new help request here on FixYa and include the full model number from the tag in the cooking cavity or elsewhere on the microwave, such as the door frame, controller frame, etc. and detailed symptoms and when they occur.

Posted on May 04, 2013

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6 Suggested Answers

6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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bigg t
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SOURCE: Microwave stops working after 2-4 minutes

either the circulation fan that cools the magnatron is bad,or the magnatron is bad itself.

Posted on Aug 25, 2007

  • 43 Answers

SOURCE: Vibrating noise when cooking

In order to try to set your mind at ease I will have to explain the Basics on how a Microwave Oven Functions.
When a Microwave Oven is set to COOK ...START. It cooks at 100%. There is no lowering of the heat as with a Range ( Cook Top) Control. So in order to do the other things such as DEFROST, WARM, or anything other than 100% COOK. A COOK ON- COOK OFF system was utilized. To DEFROST, the Microve COOKS at 100% for 30% of the TIME, then IDLES for 70% of the TIME. COOK ON 30% of the TIME, COOK OFF 70% of the TIME = DEFROST This is why you can hear the CYCLE. More power is required during the ON CYCLE, thus the lower vibration. The Vibration occurs when the High Voltage Transformer is turned ON ( COOK ON).
The VIBRATION seems to have got louder with age. This is somewhat normal as there is a vibration from the High Voltage Transformer present every time the Microwave is used. screws and other metal parts seem to get loose with this vibration. There is no solution, unless you can tighten EVERY screw, nut, and bolt in the unit.
Sorry!

Posted on Feb 03, 2008

atomicflash
  • 17 Answers

SOURCE: microwave stopped working last night

If the microwave worked for a little while after you plugged it in again then it is just overheating.It is usually just dust/dirt collecting on the vents.the fan,and the magnetron(the thing the fan blows on).If cleaning all these doesn't solve the problem you may have a bad high temp overload sensor,and need to replace it.(this sensor is usually mounted directly on the top of the magnetron.The magnetron is the part that actually puts out the microwave signal.I've never seen a reset button.The high temp sensors reset themselves automatically.

Posted on Jun 24, 2009

SOURCE: My JMV8208BAS microwave oven is

Hello,

If you hear a very loud buzzing, it is probably a shorted high-voltge diode. This may be a small black stick wired to the high-voltage capacitor (metal can with two terminals), or could be inside the can.
You would have to replace it. If the unit is no longer heating food, then the cavity magnetron has gone bad. Probably not worth trying to get it fixed, as you should be able to get a 1000w or better oven for less the a repair shop would charge to fix this one.

Take care.

Posted on Oct 17, 2010

  • 6771 Answers

SOURCE: My NN-P295 wouldn't allow me to turn off the light

It sounds to me you have short in the keypad controller system, from your description this is a very dangerous fire hazard situation, and the microwave in my view should replaced.

Posted on Feb 21, 2011

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Loud noise


If you mean a loud buzz that cuts on and off as the oven works, it is probably the outer metal cover vibrating as the magnetron powers up and down. Try holding/ pushing/ poking the metal cover while the oven is working, if the noise abates or goes away, this is the problem.
You may get relief by simply tightening the screws securing the cover, if not, maybe a little careful insertion of a thin strip of cardboard or similar, at the point the vibration occurs, may dampen it. Good luck.

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The noise is probably from the high-voltage transformer. When it is overloaded, the excess magnetic field it produces vibrates its wire coils. Odd that it only happens for a brief time. It is either defective itself (in which case it may go a long time) or it is getting overloaded by the magnatron/capacitor/diode on its output (in which case it will get worse shortly)
Hope Ya Fix it

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