No Video (Component 1, 2) - Samsung LN32B550K1R Service Manual

4. Troubleshooting

4-1-6. No Video (Component 1, 2)

Symptom Audio is normal but no picture is displayed on the screen.
-
Check the Component source
-
Major
Check the SEMS03.
-
checkpoints
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
Diagnostics
5
2
Caution Make sure to disconnect the power before working on the IP board.
4-14
Power indicator LED is off.
Lamp(Backlight) on, no video?
Yes
Check the component source and
check the connection of
component cables(Y,Pb,Pr)?
Yes
Does the component data
appear at R5022, R5019, R5020
(Comp1 / Y, Pb, Pr) R5014, R5012,
R5013 (Comp2 / Y, Pb, Pr)?
Yes
Does the digital data appear at
TP8007 (FBE_HSYNC_IN)
Pin #19,20,34,35 (LVDS Data clk)
of LVDS connector?
Yes
Check the LVDS cable?
Replace the LCD panel?
No
in the 'Stand-by mode'.
Input the component
No
source properly.
Check JA5001
No
Change the Main Assy
BN94-02709A
Check IC8003 (FBE)
No
Change the Main Assy
BN94-02709A
No
Please, Contact Tech support
Check a set