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.
•
Major
checkpoints
Check the Component source
•
This may happen when the LVDS cable connecting the Main Board and the Panel is
•
disconnected.
Diagnostics
Power indicator LED is off.
Lamp(Backlight) on, no video ?
No
Check a set in the ‘Stand-by mode’.
Yes
Check the component source and check
the connection of component cables ?
Y, Pb, Pr
No
Input the component source properly.
Yes
1
Does the component data appear at ?
COMP2_Y_CVBS : R505
-
Pb : R504
-
Pr : R502
-
No
Check CN502.
Change the Main Ass’y.
Yes
2
Check the LVDS clk signal at output of
Main Board. (TX)
TX6_CLK : TCON SDA
-
TX8_DATA : TCON SCL
-
No
Check IC1400(NT14U).
Change the Main Ass’y.
Yes
Check the LVDS cable?
Replace the T CON / LCD panel?
No
Please, Contact tech support.
Caution
Make sure to disconnect the power before working on the IP Board.
4-19
4. Troubleshooting
All manuals and user guides at all-guidesbox.com
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