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Old 02-28-2021, 07:32 PM   #10
sdinelli
Sdinelli
 
Join Date: Aug 2014
City & State: Delaware
My Country: USA
Line Voltage: 120VAC
I'm a: Hobbyist Tech
Posts: 119
Default Re: 1300W PSU - Help with replacement mosfet

Ive attached an image of pcb.
red are bad componants.(so far)
green is the good FET circuit

yellow is a questionable power transistor labeled GP4S60S. Cant fine a datasheet on that.
The reason why i question them is because there only 20ohms between the 1st and 3rd leads but also a 10K smd resistor between them as well.... Is it right to suspect them to be bad?
I didnt remove them because they're hard to get to.
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