Samsung LDO19WS Service Manual page 77

4 Troubleshooting
4-2 No Video (PC Signal)
Power Indicator is green
Does a signal appear at
1
C103,C104 and C105
(R,G,B input?)
Yes
Does a signal appear at
2 3
R108 and R110(H/V Sync)?
Yes
Does a signal appear at
4
1~30 of CN300(LVDS out)?
Yes
Replace LCD PANEL.
4-2
No
Check circutis relatedCN101.
No
Check circuits related CN101.
No
Check circuits related IC031.