4-2-6. No Video (Component)
Symptom Audio is normal but no picture is displayed on the screen.
Major
checkpoints
Check the Component source.•
This may happen when the LVDS cable connecting the Main Board and the Panel is •
disconnected.
Diagnostics
Power indicator LED is off.
Lamp(Backlight) on, no video ?
No
Check a set in the ‘Stand-by mode’.
Yes
Check the component source and check
the connection of component cables ?
Y, Pb, Pr
No
Input the component source properly.
Yes
1
Does the component data appear at ?
Comp1 Y : R530
Pb : R531
Pr : R532
No
Check CN502 or Compnent Gender.
Change the Main Ass’y.
Yes
2
Check the LVDS signal at output of Main
Board ?
TX2_CLK : LV_TX2_DN/DP
TX4_CLK : LV_TX4_DN/DP
No
Check IC1001(X10+).
Change the Main Ass’y.
Yes
Check the LVDS cable?
Replace the T-CON, LCD panel?
No
Please, Contact Tech support.
Caution Make sure to disconnect the power before working on the IP board.
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