Samsung UN F5500AF Series, Service Manual

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No Video (Video AV)
„
*Refer to the next page to check the lacation such a CN201 or IC201 SVC Manual mentioned.
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 LVDS clk signal at output of
Main board.(TX)
TX2_CLK : ODD_TXCLK_DN/DP
TX4_CLK : EVEN_TXCLK_DN/DP
No
Check IC1001(X12).
Change the Main Ass’y.
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.
4-15
4. Troubleshooting