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 Valencia
-
Check if the LVDS cable is loose or not. -
Diagnostics
No
Change the TU701 or
the main PCB assembly.
No video
No
Check the RF source and
check the connection of RF cable?
Yes
Does the signal appear at
pin11,12 of TU701?
Yes
Input the RF signal.
Check the connected cable.
Yes
7
Yes
Check the LVDS cable?
Replace the LCD panel?
Please, contact Tech support.
No
Does the digital data appear at
pin 15~81 of CN2101?
No
Change the IC1001 or
the main PCB assembly.
5
Caution Make sure to disconnect the power before working on the PD board.
Notice Refer to the next page for detailed locations.
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