Samsung LT-P468W Service Manual page 68

5 Troubleshooting
5-3 No Video (S-Video)
The power LED turns green.
Does the signal appear
at Pin BD224, BD225
G11
14
of main board CN210?
Yes
Does the signal appear at
G12
Pin 83, 82 of main board IC305?
14
Yes Yes Yes Yes
Does the signal appear
at Pin17 (H Sink) and
G07
05
Pin23 (V Sink) of IC401?
06
Yes
Does the signal appear
at Pin118 (H Sink) and
G08
07
Pin119 (V Sink) of IC405?
08
Yes
Does the signal appear
at R706 (H Sink) and
G09
09
R707 (V Sink) of IC702?
10
Yes
Does the signal appear
at Pin R758 (V Sink), Pin R757 (H Sink)
G10
11
and Pin R756 (DE) of IC702?
13
Yes
Replace LCD panel.
5-4
No
No
No
No
No
No
12
Check cable.
Check IC305 and related circuit.
Check IC401 and related circuit.
Check IC405 and related circuit.
Check IC501 and related circuit.
Check IC702 and related circuit.
LT-P468W