JTP85WA GE Microwave is humming and heating when off and door closed

[tnaknak]

Model Number

JTP85WA

My GE microwave is humming when the door is shut. I placed a glass of water in and closed the door. No lights on, turntable not moving, but the water got heated. When door is closed, after some time the microwave shuts off for a little while then turns back on. I'm assuming it was overheating then shutting down and once temp was ok, was resetting. Regular operation works fine otherwise to actually set and heat stuff. Just can't close door when not operating!

I replaced the magnetron about two years ago. I checked door switches and they seem to be ok (saw a video where someone mentioned that could solve the problem). Looked on many other threads in here and looked like most common recommendation was to change the control board. The one for my model runs about $375 on here so wanted to make sure I'm headed the right direction before purchasing. Any other recommendations? Much appreciated!

 

[rickgburton]

You're correct, there's a short on the board. When the door is closed the control is bypassing the programming and starting a cook cycle. Here's the part you need:
WB27T10463 Microwave Control


I didn't have your complete model number so I went with the first one on the list: JTP85WA1WW

 

[tnaknak]

Thank you so much, Rick!! Much appreciated!!

 

[rickgburton]

Anytime!