Samsung SyncMaster CSH7839L Service Manual page 38

7 Troubleshooting
7-1-18 OSD Failure
Check CN102 and connector Ass'y.
IC03 Pin 18 input is right?
Yes
IC03 Pin 5 input is right?
Yes
IC03 Pins 7 and 8 inputs are right?
Yes
IC03 Pins 21, 22 and 23
outputs are right?
No
IC01 Pins 4, 9 and 13 inputs
are right?
Yes
Check and replace IC01.
Done
7-12
No
Check and replace Q303 and D304.
No
Check and replace Q101.
Check CN104 Pin 3.
No
Check IC201 Pins 34 and 35.
No
Check and replace IC03.
No
Check and replace QR06,
QG06 and QB06.
CSH7839L/CSH9839L