Samsung LE32B53 SERIES - No Video (Video CVBS)

4-16
4. Troubleshooting
4-1-7. No Video (Video CVBS)
Symptom Audio is normal but no picture is displayed on the screen.-
Major
checkpoints
Check the Video CVBS source
Check the Chelsea.
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
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Diagnostics
Check CN7005
Change the Main Assy
No
Yes
Power indicator LED is off.
Lamp(Backlight) on, no video?
Yes
Check the video source and
check the connection of video cable?
No
Input the video source properly.
Yes
Yes
Check the LVDS cable?
Check the T-Con B’d?
Replace the LCD panel?
Please, Contact Tech support
No
Does the CVBS data appear at
TP - 7045?
Does the digital data appear at
Pin #19,20,34,35 (LVDS Data clk)
of LVDS connector?
No
Check IC4010 (Saturn4)
Change the Main Assy
2
No
Check a set
in the ‘Stand-by mode’.
4
Caution Make sure to disconnect the power before working on the IP board.