Service manual

4-20
4. Troubleshooting
4-1-8. No Video (Component)
Symptom Audio is normal but no picture is displayed on the screen. T
Major
checkpoints
Check the Component source T
Check the chelsea. T
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected. T
Diagnostics
Power indicator LED is off.
Lamp(Backlight) on, no video ?
Check the component source and
check the connection of component
cables(Y,Pb,Pr)?
Check the LVDS cable?
Check the T-Con B'd?
Replace the LCD panel?
Does the digital data appear at
TP-E_TXCLK+, E_TXCLK- ,
O_TXCLK+, O_TXCLK-?
Does the component data appear at
TP - COMP_Y, COMP_PB, COMP_PR?
Check a set in the 'Stand-by mode'.
Input the component source properly.
Please, Contact Tech support.
Check IC1102 (SX1).
Change the Main Assy.
Check CN802.
Change the Main Assy.
Yes
Yes
Yes
Yes
No
No
No
No
No
2
5
Caution Make sure to disconnect the power before working on the IP board.