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4-2-6. No Video (COMPONENT)
Note
Refer to the next page to check the location such a CN201 or IC201 SVC Manual mentioned.
Symptom
•
Audio is normal but no picture is displayed on the screen.
•
Check the Component source
Major
•
This may happen when the LVDS cable connecting the Main Board and the Panel is
checkpoints
disconnected.
1
Diagnostics
2
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 ?
COMP2_Y_CVBS : R505
-
Pb : R504
-
Pr : R502
-
Yes
Check the LVDS clk signal at output of
Main Board. (TX)
TX6_CLK : TCON SDA
-
TX8_DATA : TCON SCL
-
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.
Check CN502.
No
Change the Main Ass'y.
Check IC1400(NT14U).
No
Change the Main Ass'y.
No
Please, Contact tech support.
4. Troubleshooting
4-19
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