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4. Troubleshooting
No Video (Video CVBS 1, 2)
„
N Refer to the next page to check the location such a CN201 or IC201 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.
4-18
Valencia
Audio is normal but no picture is displayed on the screen.
Check the Video 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 video source and
check the connection of video cable?
Yes
Does the signal appear at R528?
Yes
Does the digital data appear at
pin 14~42 of CN1601?
Yes
Check the LVDS cable?
Check the T-con board?
Replace the LCD panel?
No
Check a set in the 'Stand-by mode'.
No
Input the video source properly
No
Change the CN506_UBA or
the main PCB assy.
No
Change the IC1202 or
the main PCB assembly.
No
Please, contact Tech support.
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