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4-1-5. No Picture (Video_CVBS)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Check the Video Source
-
Major
Check the IC6002, IC6001(SDP84), IC7001
-
checkpoints
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
Diagnostics
1
2
Caution
Make sure to disconnect the power before working on the IP board.
2
Power Indicator is off.
Lamp on, no picture.
Yes
Does the signal appear at
C6852,C6853,C6854?
Yes
Does the digital data appear at the
output of LVDS (TP7025~TP7038 ,
TP7040~TP7053)?
Yes
Check a LVDS cable?
Replace lcd panel?
1
No
No
No
No
4. Troubleshooting
Check a A/V cable and video signal.
Check a connection harness.
Check a IC7001
Change a main PCB ass'y
Please, Contact Tech support.
4-9
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