4-11
4. Troubleshooting
4-1-6. No Video (Video CVBS 1, 2)
Symptom Audio is normal but no picture is displayed on the screen.-
Major
checkpoints
Check the Video CVBS source
Check the Bayhill+
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
-
-
Diagnostics
Yes
Check the LVDS cable?
Replace the LCD panel?
Please, Contact Tech support
No
Does the digital data appear at output
of R1308 ~R1321, R1323~R1336?
No
Check IC1001
Change the main PCB assembly
5
No
Check CN201 or Side-AV
Change the main PCB ass’y or
Side-AV Ass’y
Power Indicator is off.
Lamp(Backlight) Off, no video
No
Check the video source and
check the connection of
video cable?
Does the signal appear at R253
(CVBS1)
R323B (CVBS2 for 32” 40” 52”)
R515S (CVBS2 for 46”)?
Yes
Yes
Input a video signal.
Check the connected cable.
5
Yes
Caution Make sure to disconnect the power before working on the IP board.
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