Samsung LN32A450C1D - No Video (S-Video 1, 2)

4-13
4. Troubleshooting
4-1-7. No Video (S-Video 1, 2)
Symptom Audio is normal but no picture is displayed on the screen.-
Major
checkpoints
Check the S-Video source
Check the MSD2248AL
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
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Diagnostics
Check JA806S 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.
Yes
Check the LVDS cable?
Replace the LCD panel?
Please, Contact Tech support
No
Does the digital data appear at output
of R5006~R5020, R5022~R5029?
No
Check IC3001
Change the main PCB assembly
9
6
Does the signal appear
at C3022 and C3023?
Yes
Does the digital data appear at output
of R3082F~R3095F?
No
Check IC4001
Change the main PCB assembly
7
Yes
Caution Make sure to disconnect the power before working on the IP board.