4-19
4. Troubleshooting
4-1-8. 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 chelsea.
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
-
-
Diagnostics
No
Does the component data appear at
R725, R727, R728
(Comp1 / Y, Pb, Pr)
R702, R703, R704
(Comp2 / Y, Pb, Pr)?
Power indicator LED is off.
Lamp(Backlight) on, no video?
No
Check the component source and
check the connection of
component cables(Y,Pb,Pr)?
Check CN701
Change the Main Assy
550 32” : BN94-02518A
550 37” : BN94-02518B
550 40” : BN94-02518A
550 46” : BN94-02518D
550 52” : BN94-02518E
540 40” : BN94-02510A
540 46” : BN94-02510B
540 52” : BN94-02510C
Yes
Check IC201 (Saturn4)
Change the Main Assy
550 32” : BN94-02518A
550 37” : BN94-02518B
550 40” : BN94-02518A
550 46” : BN94-02518D
550 52” : BN94-02518E
540 40” : BN94-02510A
540 46” : BN94-02510B
540 52” : BN94-02510C
No
No
Does the digital data appear at
Pin #19,20,34,35 (LVDS Data clk)
of LVDS connector?
No
Please, Contact Tech support
Check the LVDS cable?
Check the T-Con B’d?
Replace the LCD panel?
Yes
Input the component
source properly.
Yes
Yes
2
Check a set
in the ‘Stand-by mode’.
5
Caution Make sure to disconnect the power before working on the IP board.
To Next Page
Loading...
