Samsung LA32C550J1F Service Manual page 62

4-1-7. No Video (Video CVBS)
Symptom Audio is normal but no picture is displayed on the screen.
-
Check the Video CVBS source
-
Major
Check the Chelsea.
-
checkpoints
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
check the connection of video cable?
4
Diagnostics
2
Caution Make sure to disconnect the power before working on the IP board.
All manuals and user guides at all-guides.com
Power indicator LED is off.
Lamp(Backlight) on, no video ?
Yes
Check the video source and
Yes
Does the CVBS data appear at
TP - AV_CVBS?
Yes
Does the digital data appear at
TP-E_TXCLK+, E_TXCLK- ,
O_TXCLK+, O_TXCLK-?
Yes
Check the LVDS cable?
Check the T-Con B'd?
Replace the LCD panel?
4. Troubleshooting
No
Check a set in the 'Stand-by mode'.
No
Input the video source properly.
Check CN801.
No
Change the Main Assy.
Check IC1102 (SX1).
No
Change the Main Assy.
No
Please, Contact Tech support.
4-17