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4-1-7. No Video (Component)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Check the Component source
-
Major
Check the MSD237HCG.
-
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.
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
CN5005 (Comp1 / Y, Pb, Pr)?
Yes
Does the digital data appear at
CN109 (LVDS Data clk)
of LVDS connector?
Yes
Check the LVDS cable?
Replace the LCD panel?
No
in the 'Stand-by mode'.
No
Input the component
source properly.
Check CN5005
No
Change the Main Assy
BN94-02990A
Check IC4010 (Saturn4)
No
Change the Main Assy
BN94-02990A
No
Please, Contact Tech support
4. Troubleshooting
Check a set
4-19
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