Samsung LN40A330J1D - No Video (Tuner DTV)

4-9
4. Troubleshooting
4-1-5. No Video (Tuner DTV)
Symptom Audio is normal but no picture is displayed on the screen.-
Major
checkpoints
Check the DTV source
Check the MSD2248AL
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
-
-
Diagnostics
No
Check TU5001
Change the main PCB assembly
or tuner.
Power Indicator is off.
Lamp(Backlight) Off, no video
No
Check the RF source and
check the connection of RF cable?
Yes
Check IC3001
Change the main PCB assembly
No
Does the digital data appear at output
of R5006~R5020, R5022~R5029?
Does the digital data appear
at R5022~R5029(TS DATA)
Check IC4001
Change the main PCB assembly
No
Does the digital data appear at output
of R3082F~R3095F?
No
Please, Contact Tech support
Check the LVDS cable?
Replace the LCD panel?
Yes
Input the RF signal.
Check the connected cable.
Yes
Yes
7
6
Yes
7
Caution Make sure to disconnect the power before working on the IP board.