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microwave making a humming noise for no apparent reason.


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3 replies to this topic

#1 bimbbobway

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Posted 02 May 2013 - 01:18 PM

Model MH3184XPS2 Ser TRS4019737. I have a microwave that is humming for no apparent reason. The customer states that the microwave hums all the time even when not in use. She says as soon as you plug it in it will home until you unplug it. While plugged in and making a humming noise it will function normal the lights will come on and off it will heat the fan will work. I tested all the obvious stuff door switches, magnetron, Diode, turntable motor all seemed fine. While I was there it would not make the humming noise. Has anyone ever seen anything like this before? I might have a crazy homeowner.
www.mrappliance.com/wilmington

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#2 Scottthewolf

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Posted 02 May 2013 - 03:44 PM

More than likely one of the relays is going bad on the electronic control board. Sounds like you need to replace the electronic control board.


Scott Wolf

#3 RegUS_PatOff

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Posted 02 May 2013 - 04:15 PM

could be the Low Voltage Transformer in the center of the Control Board.
shouldn't affect anything ...
http://www.repaircli...R=154&N=1482533

 

Main-Control-Board-W10233386--00999717.j


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#4 DurhamAppliance

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Posted 02 May 2013 - 05:29 PM



 I have a microwave that is humming for no apparent reason....

or maybe there's a song it just can't get out of its head......  lol-045.gif

 

sorry, I couldn't resist.    Yeah...what they said.


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