Samsung LN40A330J1D - No Video (Component 1, 2)

4-15
4. Troubleshooting
4-1-8. No Video (Component 1, 2)
Symptom Audio is normal but no picture is displayed on the screen.-
Major
checkpoints
Check the Component source
Check the MSD2248AL
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
-
-
Diagnostics
No
Check JA5002
Change the main PCB ass’y
Power Indicator is off.
Lamp(Backlight) Off, no video
No
Check component source and
check the connection of
component cable ?
Check IC3001
Change the main PCB assembly
Does the signal appear at
C3016~C3019 and C3025(Y,Pb,Pr)
of IC3001?
No
Check IC4001
Change the main PCB assembly
No
Does the digital data appear at output
of R3082F~R3095F?
Does the digital data appear at output
of R5006~R5020, R5022~R5029?
No
Please, Contact Tech support
Check the LVDS cable?
Replace the LCD panel?
Yes
Yes
Input a component signal.
Check the connected cable.
Yes
6
Yes
7
Yes
0
Caution Make sure to disconnect the power before working on the IP board.