4-14
4. Troubleshooting
4-1-6. 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 SEMS03.
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
-
-
Diagnostics
Does the component data
appear at R5022, R5019, R5020
(Comp1 / Y, Pb, Pr) R5014, R5012,
R5013 (Comp2 / Y, Pb, Pr)?
No
Yes
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)?
No
Input the component
source properly.
Yes
Check JA5001
Change the Main Assy
BN94-02709A
Yes
Check the LVDS cable?
Replace the LCD panel?
Please, Contact Tech support
No
Does the digital data appear at
TP8007 (FBE_HSYNC_IN)
Pin #19,20,34,35 (LVDS Data clk)
of LVDS connector?
No
Check IC8003 (FBE)
Change the Main Assy
BN94-02709A
2
No
Check a set
in the ‘Stand-by mode’.
5
Caution Make sure to disconnect the power before working on the IP board.
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