Samsung GD15N Series Service Manual page 40

5 Troubleshooting
5-2 No Video (PC Signal)
Power indicator is green.
Does the signal appear at
R132, R133, R134?
Yes
Does the clock pulse
appear at R357?
Yes
Does the clock pulse appear at
output of RA306 ~ RA311?
Yes
Does the clock pulse
appear at Pin 12 of IC204?
Yes
Does the clock pulse appear at
output Pin 39, 40 of IC403?
Yes
Replace LCD Panel.
5-2
No
Check R132, R133, R134, R137, R138,
R139, R103, R104, R105.
No
Check related circuit of IC301, FT301.
No
Check related circuit of IC301.
No
Check IC204 and related circuit of IC204.
No
Replace IC403.
CONFIDENTIAL
GD15N*/GD15A*