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- / OD
EVEN_TXCLK- / EVE
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.
4-11
4. Troubleshooting
