Samsung LW46G15W Service Manual page 26

5 Troubleshooting
5-2 No Video (CVBS)
The power LED turns green.
Does the signal
appear at Pin 13 of
CN214(AV), R266(EXT.1),
G05
R2112(EXT.2), R2167(EXT.3)?
Yes
Does the signal
G06
appear at C8131?
04
Yes
Does the signal appear
at R389(H sink) and
G07
05
R388(V sink) of IC302?
06
Yes
Does the signal appear
at R416(H Sink) and
G08 07
R412(V Sink) of IC402?
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
and Pin R756 (DE) of IC702?
13
Yes
Replace LCD panel.
5-2
No
No
Check IC303 and related circuit.
No
Check IC302 and related circuit.
No
Check IC402 and related circuit.
No
Check IC501 and related circuit.
11 No
Check IC702 and related circuit.
12
Check cable.
LW46G15W