No Video_Component (B Type) - Samsung UN32C4000PD Service Manual

4-1-8. No Video_Component (B Type)

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 chelsea.
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checkpoints
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
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5
2
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
TP - COMP1_Y, COMP1_PB, COMP1_PR
(Comp / Y, Pb, Pr) ?
Yes
Does the digital data appear at
TP - O_TXCLK+, O_TXCLK-,
F_TXCLK+, F_TXCLK- ?
Yes
Check the LVDS cable?
Check the T-Con B'd?
Replace the LCD panel?
No
Check a set in the 'Stand-by mode'
No
Input the component source properly.
Check CN701.
No
Change the Main Assy.
Check IC302 (SX4).
No
Change the Main Assy.
No Please, Contact Tech support.
4. Troubleshooting
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