Samsung UE46C6000 - No Video (Video CVBS)

4-24
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 Valencia. -
Refer to the next page to check the lacation such a CN201 or IC201 SVC Manual mentioned. -
Diagnostics
Power indicator LED is off.
Lamp(Backlight) on, no video ?
Yes
Yes
Yes
No
Check a set in the ‘Stand-by mode’.
Check the LVDS cable?
Replace the T-con / LCD panel?
No
Please, Contact Tech support.
Input the video source properly.
Check the video source and
check the connection of video cable?
No
Check CN3004 or CN3005.
Change the Main Assy.
No
Check the CVBS signal at Input of IC6001?
SC1_AV1_CVBS_IN : C6140
SC1_AV2_CVBS_IN : C6141
8
Yes
Yes
Check IC7001.
Change the Main Assy.
Check IC7001.
No
No
Check the CVBS clk signal
at output of IC6001?
R6011 : ASN_CVBS_CLK
Check the LVDS clk signal at output of
Main board? (TX1~TX4)
TX2_BP, TX2_CN, TX2_CP, TX2_CLKN
TX4_BP, TX4_CN, TX2_CP, TX2_CLKN
7
5
Caution Make sure to disconnect the power before working on the IP board.