Hello!
New here and hope to do some good repair with U!
So this tv was dead when I got it. However I had an amateur looking at it and he suspected the STK795-811A on the Ysus board. So I bought one and replaced. No change...the power led does light up green but no sound or any picture at all. No menu picture... nothing. You can hear the parts working with the buzzing in the back though.
It would be very interesting to target the faulty parts with your aid! So I made pictures and hopefully you have suggestions what to test. However I'm still quite green so any additional safety or extra tip is very much appreciated.