Samsung LE23R71W Service Manual page 67

4 Troubleshooting
4-6 No Picture (S-VIDEO_Y,C)
Power Indicator is off.
Lamp on, no picure.
Yes
Does the signal appear at
6
R7001, R7002?
Yes
Does the digital data appear
3
at Output of R422~R425,
R430~R433?
Yes
Check LVDS cable?
Replace lcd panel?
4-10
No
Check s-video cable connection.
Check Video Source.
No
Change S-Video Cable.
No
Check IC310.
Change main PCB ass'y.
No
Please call Samsung Co. LTD.