Samsung LN32A330J1D - No Video (Analog Pc Signal)

4-3
4. Troubleshooting
4-1-2. No Video (Analog PC signal)
Symptom Audio is normal but no picture is displayed on the screen.-
Major
checkpoints
Check the PC source
Check the MSD2248AL
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
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-
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Diagnostics
Check IC1001, PC cable.
Change the PC cable. Change the main
PCB assembly
No
Yes
Does the digital data appear at output
of R3007~R3014?
No
Yes
Power Indicator is off.
Lamp(Backlight) Off, no video
Yes
Check the PC source and
check the connection of DSUB?
No
Input an analog PC signal.
Check the connected cable.
Yes
Check IC3001
Change the main PCB assembly
Check the LVDS cable?
Replace the LCD panel?
Please, Contact Tech support
No
Does the signal appear at
#w1, #u1, #AB2, #F1, #G1
(R, G, B, H, V) of IC3001?
Does the digital data appear at output
of R3088F, R3089F?
No
Check IC4001
Change the main PCB assembly
1
2
3
Yes
Caution Make sure to disconnect the power before working on the IP board.