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Whrlp Master Tech
Whrlp Master Tech, Whirlpool Master Technician
Category: Appliance
Satisfied Customers: 9717
Experience:  30 years Appliance Field 15 yr with Whirlpool Corp. 9 yrs Whirlpool Technical Assistance Line
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We have a KHMS2040WSS microwave that has started arcing

Customer Question

We have a KHMS2040WSS microwave that has started arcing (pop, pop, pop) during use--like an explosion. We have placed no metal inside the microwave. What else can cause this problem. I can see flashes of light at the top when it happens, so I have stopped using it. Can it be repaired?
Submitted: 1 year ago.
Category: Appliance
Expert:  Whrlp Master Tech replied 1 year ago.

Thank you for requesting me !

this is normally an issue with the magnetron starting to go bad and arching in the upper wave guide area.

Stop using it or you could damage the wave guide ant it is not replaceable.

How handy are you?

The unit will need to be taken down off the wall and taken apart.