Samsung UE D65 V Series Service Manual page 50

4. Troubleshooting
No Video (Tuner_CVBS)
„
N Refer to the next page to check the lacation such a CN201 or IC1001 SVC Manual mentioned.
Symptom
-
-
Major
-
checkpoints
-
Caution Make sure to disconnect the power before working on the PD board.
1
2
Diagnostics
Caution Make sure to disconnect the power before working on the IP board.
4-12
Genoa-S
Audio is normal but no picture is displayed on the screen.
Check the Tuner CVBS source
Check the Tuner, Check the Valencia.
This may happen when the LVDS cable connecting the Main Board and the Panel is
disconnected.
Power indicator LED is off.
Lamp(Backlight) on, no video ?
Yes
Check the RF source and
check the connection of RF cable ?
Yes
Does the signal appear at
pin11,12 of TU702_FN?
Yes
Does the digital data appear at
pin 14~42 of CN1601?
Yes
Check the LVDS cable?
Replace the T-con / LCD panel?
No
Check a set in the 'Stand-by mode'.
No
Input the RF source properly.
No
Change the TU702_FN or
the main PCB assembly.
No
Change the IC1001 or
the main PCB assembly.
No
Please, contact Tech support.