Samsung UN46C9000ZF Service Manual page 104

4. Troubleshooting
4-1-2. No Video (Analog PC signal)
Symptom
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-
Major
-
checkpoints
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1
Diagnostics
2
Caution Make sure to disconnect the power before working on the PD board.
Notice Refer to the next page for detailed locations.
4-12
Audio is normal but no picture is displayed on the screen.
Check the PC source
Check the IC1001(Valencia)
Check if the LVDS cable is loose or not.
No video
Yes
Check the PC source and check the
connection of DSUB?
Yes
Does the signal appear at
Pin 1,2,3,13,14(R,G,B,H,V) ?
Yes
Does the digital appear at output of IC6001?
check R411, R412, R413, BD407,
BD408 (R, G, B, H, V)
Yes
Check the LVDS cable?
Replace the LCD panel?
Input an analog PC signal.
No
Check the connected cable.
No Change the PC cable.
Change the main PCB assembly.
No
Change the IC6001 or the main PCB
No
Please, contact Tech support
assembly.