Samsung LA32C550J1R, Service Manual

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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 IC1102(SX1).
-
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
Diagnostics
1
No
PC cable. Change a PC.
cable. Change a main PCB ass’y.
No
Does the digital data appear at the
output of LVDS Cable?
Power Indicator is off.
Lamp on, no video.
No
Check a PC source and check
the connection of DSUB cable?
IC11021.
Change a main PCB ass’y.
Yes
Check a LVDS cable?
Replace a lcd panel?
Does the signal appear at R581(R),
R582(G), R583(B) of IC1102?
Please, Call to Samsung Co. LTD.
Yes
Yes
Input a analog PC signal and
connected cable(DPMS).
Yes
1
Yes
Caution Make sure to disconnect the power before working on the IP board.