Samsung LE32C53 Series - No Video (Tuner CVBS)

4-10
4. Troubleshooting
4-1-5. No Video (Tuner_CVBS)
Symptom Audio is normal but no picture is displayed on the screen. -
Major
checkpoints
Check the Tuner CVBS source. -
Check the Tuner, Check the Chelsea. -
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 ?
Check the RF source and
check the connection of RF cable?
Check the LVDS cable?
Check the T-Con B'd?
Does the digital data appear at
TP-E_TXCLK+, E_TXCLK- ,
O_TXCLK+, O_TXCLK-?
Does the DC B5V_TU_PW, TU33V_PW
appear at #3, #5 Pin of Tuner ?
Check a set in the 'Stand-by mode'.
Input the RF source properly.
Please, Contact Tech support.
Check IC1102 (SX1).
Change the Main Assy.
Change the Main Assy.
Yes
Yes
Yes
Yes
No
No
No
No
No
2
Caution Make sure to disconnect the power before working on the IP board.