No Vido (Tuner DTV)
Symptom
Audio is normal but no picture is displayed on the screen.
•
Major
checkpoints
Check the DTV source.
•
Check the Tuner.
•
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 RF source and check the
connection of RF cable.
No
Input the RF source properly.
Yes
1
Check the ‘signal strength’ in Self
Diagnosis menu Strength is enough ?
No
Check the D-TV source.
Yes
2
Check the Power of Tuner ?
Pin #4 of Tuner : B3.3V_Tuner
Pin #2 of Tuner : B1.8V_Tuner
No
Change the Main Assy.
Yes
2
Check the LVDS clk signal at output of
Main board ?
ODD_TXCLK- / OD
EVEN_TXCLK- / EVE
No
Change the Main Assy.
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.
4-9
4. Troubleshooting