Samsung LT15M23C Service Manual page 20

5 Troubleshooting
5-2 No Picture (TV, Video, S-Video, DVD)
Check C800(TV)
No
Check C822(Video)
Check the input signal.
9
Check C824(S-Video)
Check C821(DVD)?
Yes
Check the IC802.
WAVEFORMS
9
5-4 LT15M23C