Why is unit making a buzzing noise that stops only when the interlock switch activates by opening the door?

Whirlpool Microwave Buzzing Loudly - ApplianceBlog

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Aug 12, 2011 - 10 posts - ‎2 authors
My Whirlpool MT4155SPS-2 microwave oven has recently started to buzz loudlywhen operated. The sound is getting louder and more frequent ...

Whirlpool making intermittent loud buzzing noise Microwave ...

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Whirlpool microwave ovens making intermittent loud buzzing noise related questions and answers. Ask your ... ...loud buzzing noise and it doesn't heat. i just tried it again and let it run for 1 minute. ... Question about Accuwave Microwave Oven.

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If your microwave buzzes loudly and produces no heat you probably have a defective power .... I have a whirlpool oven range and it's less than a year old. .... Humming sound stops when I open door to remove food, but when door is closed, ...

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Unit uses a Magnetron and likely a power board called an inverter to run it. Someone would have to open the unit in a way where they might pinpoint where the sound is coming from and then take action--does not of course sound normal or good to me.

Could be the evaporator fan motor about to fail or the evap fan blade touching something. If the fan is controlled by a door switch, opening the door would deactivate the motor and the noise would stop. Depress the door switch and see if you can locate the exact source of the noise.

When start button is pushed there is a buzzing noise but dryer will not start.

buzzing noise is cause by small electrical arc inside the unit or a problem in your audio circuit.if you can open the unit up and check if its an electrical arc.

ok ur door lock switch isnt going out,,however ur drivers front door lock actuator is going or is already bad...have that replaced..also as far as the end noise buzz u hear , that may be ur a.b.s modulator and accumulator cycleing on and off..it may be empty and or leaking..have the a.b.s modulator and accumulator checked at the dealer..its an expensive fix... ur modulator unit in in the front left or right of the vehicle depending if u have a v6 or 4 cyl. its a square unit with a rectangular brake fluid resevroir and a long tubular cylinder (acummulator)... also identify it by the orange connectors...and the brakelines going to it...common symptom with those accords....they leak alot especially if with high mileage..

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?

The magnatron is shorting, overloading the high voltage transformer. From the picture this looks like an older unit and is probably not worth a magnatron replacement.

Air flow from freezer to fridge box may be obstructed, ck for free flow there, no big steaks in the way of air to lower unit, or may be set too cold. Thats all i got for now, try it.

the buzzing is normal.  there is an element inside the quartz tube much like a filament in a light bulb.  as this heats up it starts to move.  where you have electrical energy you also have magnetism produced. metal objects vibrate when they are in or within a magnetic field. the element is tungsten wire and vibrates off this magnetic field.