Service manual

NO
YES
NO
YES
NO
YES
YES
NO
NO
Check the main
board 5V ?
Check
U9,U11,R43
+3.3V ?
Check
U7,U12
Change
Signal Cable
Display ?
Check
H/V Signal
H/V Input
Signal ?
Check the main
board
U8/Pin1 ?
Check
3.3V Circuit
Change
U8
No display
(White)
YES
OK !