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4-2-4. No Video
Symptom
•
Audio is normal but no picture is displayed on the screen.
•
Check the Video CVBS source.
Major
•
This may happen when the LVDS cable connecting the Main Board and the Panel is
checkpoints
disconnected.
Diagnostics
1
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 video source and check the
connection of video cable?
Yes
Check the LVDS clk signal at output of
Main board. (TX)
TX2_CLK : ODD_TXCLK_DN/DP
TX4_CLK : EVEN_TXCLK_DN/DP
Yes
Check the LVDS cable?
Replace the T CON / LCD panel?
No
Check a set in the 'Stand-by mode'.
No
Input the video source properly.
Check IC1001(X14H)
No
Change the Main Ass'y.
No
Please, Contact tech support.
4. Troubleshooting
4-11
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