ME18H704SFS Samsung microwave hums when door is closed

[kuzmigl]

Model Number

ME18H704SFS

Hello, microware manufactured Sept 2015. Started shutting down due to heat from pots and pans on stovetop. Now microwave cooks food when plugged in and door is shut, no lights or turntable. I can also cook food with door closed through normal operation.

So when plugged in and door closed, magnetron is active. I've tested all 3 door switches, all 3 are OK.
Thermostats seem ok as well, I think:

1507 KSD-140LC 0 = closed
1507 KSD-40LC 70 = open
1507 KSD-120LC 0 = closed

Anything else I can test?

Thank you!

 

[rickgburton]

There's a short somewhere on the main control board:
DE92-03624B Assy Pcb MAIN

 

[kuzmigl]

Thanks for the reply, I was thinking the same, either a short or a faulty relay. Things went from bad to worse, microwave tripped my 20A breaker and now no longer runs at all!
This Samsung is a lemon, and with labor day sales, its worth getting a new microwave as we were never happy with the Samsung...

 

[rickgburton]

Good idea!

 

[Nitehawk]

I also have the same symptom with another Samsung model (ME21F707MJT/AC) is it possible that my board is bad as well. This unit is on 18mth old

 

[rickgburton]

it's possible