Troubleshooting Procedures By Ass'y - Samsung TXT3093WHX Service Manual

Troubleshooting

6-3 Troubleshooting Procedures by ASS'Y

6-3-1 NO Power
1. Power Board Check
Main Board
IC802 #1 check
IC802 #3 check
Regulator B'd Power
port-Stdby 5V short
C839 142V check
Regulator B'D 9V
check
OK
6-4
FD804S check
D805 check
2
NO
HS401 Change
FJ6920
Regulator B'D
change
IC801S
(STR6750) change
Test Point Stand-by
C839 70~80V
C810 6.5~7V
Samsung Electronics
Power On
145V
15V