No Picture (Video/S-Video/Scart) - Samsung LDO19WS Service Manual

4 Troubleshooting
4-4 No Picture (Video/S-VIDEO/SCART )
Power Indicator is off.
Lamp on, no picture.
Dose the signal appear at
R732,R733,R734
Yes
Does the signal appear at
5
PIN(71:80) of IC703?
Yes
Does the digital data
appear at output of LVDS
4
(RA301~RA303)?
Yes
Check a LVDS cable?
Replace lcd panel?
4-6
No
Check a A/V cable and
video signal.
No
Check a connection harness.
No
Check a IC703.
Change a main PCB ass'y.
No
Check a IC301.
Change a main PCB ass'y.