OK Thanks
I believe i can get help acquiring and replacing the components at work now that i now witch components to replace.

Sorry about your hand. I live in Sweden, Stockholm and because of the pandemic im not able to come to Norway any time soon

I believe the short circuit that caused all this was do to me using wrong type of dc power jacks on my carriage and that current flue thru the frame of my printer, i have removed all connectors of this type and i'm searching for better ones.

Iv buzzed the mosfets and the one in the lower right corner seams to be always open, i assume that is the bad one.
When plugged in the upper mosfet has VIN current at drain meanwhile the lower shows no current on any pin, does that help?

Hi... If i Send you my duet can you change the mosfet?
Alsow it looks like something is wrong with the pwm fan outputs, only fan 2 is responding, there is curent flowing on the other two chanels but no mater what procentige im running they wont drive a fan.

Thanks again

Do you know witch one of the mos fets that is for heater 1 and mayby the values?
How wuld i go about to use an external mosfet?

@bearer thanks i will try that

I dont know what caused it but my e1 heater is always on, i have tryed removing the sd card, no change.

What can i do?
Is my board fried?
do i have to buy a new one?