No Video (Component) - Samsung UN F6300AF Series Service Manual

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 : R816
-
Pb : R817
-
Pr : R815
-
Yes
Check the LVDS clk signal at output of
Main Board. (TX)
TX2_CLK : ODD_TXCLK_DN/DP
-
TX4_CLK : EVEN_TXCLK_DN/DP
-
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 IC1001(X12).
No
Change the Main Ass'y.
No Please, Contact tech support.
4. Troubleshooting
4-19