4-254. Troubleshooting4-2-7. No Video (Component 1, 2)※ 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.-MajorcheckpointsCheck the Component source-Check the Valencia.-This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.-DiagnosticsPower indicator LED is off.Lamp(Backlight) on, no video ?YesYesYesNo 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 component source properly.Check the component source and check theconnection of component cables(Y,Pb,Pr) ?NoCheck CN502.Change the Main Assy.NoDoes the component data appear at ?Comp1 Y : C1039Pb : C1040Pr : C10419YesCheck IC1101(Valencia) andIC1701(Reading).Change the Main Assy.NoCheck the LVDS clk signalat output of Main board.(TX1~TX4)TX1_CLK : TP1978 ~1979TX2_CLK : TP1980 ~1981TX3_CLK : TP19102 ~19103TX4_CLK : TP19104 ~191055Caution Make sure to disconnect the power before working on the IP board.