No Video (Video CVBS, COMPONENT)
Symptom Audio is normal but no picture is displayed on the screen.•
Major
checkpoints
Check the Video CVBS 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 video source and check the
connection of video cable?
No
Input the video source properly.
Yes
2
Check the input date ?
CN403 #2(COMP1_Y_CVBS1)
CN403 #8(COMP1_PR)
CN403 #5(COMP2_PB)
No
Check the CN403.
Change the Main Assy.
Yes
2
Check the LVDS clk signal at output of
Main board ?
ODD_TXCLK- / ODD_TXCLK+
EVEN_TXCLK- / EVEN_TXCLK+
No
Change the Main Assy.
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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