Samsung 75E DP17LT7U Manual page 28

5 Troubleshooting
5-2-5 Unsynchronized Image
Check input signals Pins 2
and 3 of CN202.
Are signals right?
Yes
Signals at Pins 28 and 29 of
IC201 are right?
Yes
Signals at Pins 14 and 15 of
IC401 are right?
Yes
Check circuits on Main board.
Done
5-16
No
Check Video Cable
No
Check IC201.
No
Check IC401
DP15H*/DP17L*