Samsung LB15VS Service Manual page 35

5 Troubleshooting
5-2-5 Unsynchronized Image
Check input signals Pin 2, 3
and 5 of CN202.
Signals are right?
Yes
Signals at Pin 28 and 29 of
IC201 are right?
Yes
Signals at Pin 1 and 2 of
IC401 are right?
Yes
Check circuits on main board.
Done
5-16
No
Check video cable
No
Check IC201.
No
Check IC401
LB15VS/LB17LS/LB17KS/
LB17LT/LB17KT