Samsung LW17N23W Service Manual page 28

5 Troubleshooting
5-3-1 No Video (Tuner, AV CVBS, S-Video)
Does the signal appear at
3-1 3-2
C237 (TV), C230 (AV),
3-3 3-4
C229 (SVHS_Y), C228 (SVHS_C)
Yes
Does the signal appear at X201?
3-6
Yes
Does the signal appear at
3-5
RA201~RA204?
Yes
Repeat 'A' process.
5-3-2 No Video (Scart Input)
Does the signal
3-7
3-10
appear at C256, C257,
3-8
3-11
C258, C183, C185?
3-9
Yes
Repeat 'A' process.
5-6
No
Change CN809 or replace
SUB_board with new one.
No
Change X201 or replace main
board with new one.
No
Change IC201 or replace main board
with new one.
No
Change IC103, IC802 or replace
main board with new one.
LW17N23W