4-1-7. No Video (Component 1, 2)
Symptom Audio is normal but no picture is displayed on the screen. -
Major
checkpoints
Check the Component 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 component source properly.
Check the component source and check the
connection of component cables(Y,Pb,Pr) ?
No
Check CN503.
Change the Main Assy.
No
Does the component data appear at ?
Comp1 Y : C1049
Pb : C1050
Pr : C1051
Comp2 Y : C1052
Pb : C1053
Pr : C1054
9
Yes
Check IC1101 and IC1701.
Change the Main Assy.
No
Check the LVDS clk signal at output of
Main board? (TX1~TX4)
TP1916 ~1919
TP1940 ~1942
5
Caution Make sure to disconnect the power before working on the IP board.
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