Samsung LA32C630 Series Service Manual page 81

4-1-7. No Video (Component 1, 2)
Symptom Audio is normal but no picture is displayed on the screen.
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Check the Component source
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Major
Check the Valencia.
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checkpoints
Refer to the next page to check the lacation such a CN201 or IC201 SVC Manual mentioned.
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9
5
Diagnostics
Caution Make sure to disconnect the power before working on the IP board.
Power indicator LED is off.
Lamp(Backlight) on, no video ?
Yes
Check the component source and check the
connection of component cables(Y,Pb,Pr) ?
Yes
Does the component data appear at ?
Comp1 Y : C1039
Pb : C1040
Pr : C1041
Comp2 Y : C1047
Pb : C1048
Pr : C1049
Yes
Check the LVDS clk signal at output of
Main board? (TX1~TX4)
TP1916 ~1919
TP1940 ~1942
Yes
Check the LVDS cable?
Replace the T-con / LCD panel?
No
Check a set in the 'Stand-by mode'.
No
Input the component source properly.
No
Check CN502.
Change the Main Assy.
No Check IC1101 and IC1701.
Change the Main Assy.
No
Please, Contact Tech support.
4. Troubleshooting
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