No Video (S-Video) - Samsung LN32A650A1F Service Manual

4-1-7. No Video (S-Video)

Symptom Audio is normal but no picture is displayed on the screen.
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Check the S-Video source
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Major
Check the Bayhill+
-
checkpoints
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
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Diagnostics
8
5
Caution Make sure to disconnect the power before working on the IP board.
Power Indicator is off.
Lamp(Backlight) Off, no video
Yes
Check the video source and
check the connection of
video cable?
Yes
Does the signal appear
at R321B, R322B (for 32" 40" 52")
R517S, R518S (for 46")?
Yes
Does the digital data appear at output
of R1308 ~R1321, R1323~R1336?
Yes
Check the LVDS cable?
Replace the LCD panel?
Input a video signal.
No
Check the connected cable.
Check CN303B or Side-AV
No
Change the main PCB ass'y or
Side-AV assembly
No
Check IC1001
Change the main PCB assembly
No
Please, Contact Tech support
4. Troubleshooting
4-13