4-13
4. Troubleshooting
4-1-7. No Video (S-Video)
Symptom Audio is normal but no picture is displayed on the screen.-
Major
checkpoints
Check the S-Video source
Check the Bayhill+
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
-
-
Diagnostics
Check CN303B or Side-AV
Change the main PCB ass’y or
Side-AV assembly
No
Yes
Power Indicator is off.
Lamp(Backlight) Off, no video
Yes
Check the video source and
check the connection of
video cable?
No
Input a video signal.
Check the connected cable.
8
Does the signal appear
at R321B, R322B (for 32” 40” 52”)
R517S, R518S (for 46”)?
Yes
Yes
Check the LVDS cable?
Replace the LCD panel?
Please, Contact Tech support
No
Does the digital data appear at output
of R1308 ~R1321, R1323~R1336?
No
Check IC1001
Change the main PCB assembly
5
Caution Make sure to disconnect the power before working on the IP board.
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