Samsung LA22B450C8 - Troubleshooting: No Picture (Video_CVBS)

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4. Troubleshooting
4-1-5. No Picture (Video_CVBS)
Symptom Audio is normal but no picture is displayed on the screen.-
Major
checkpoints
Check the Video Source
Check the M-star
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
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Diagnostics
LA22B350F2 LA22B450C8
No
Check a connection harness.
No
Power Indicator is off.
Lamp on, no picture.
Yes
Does the signal appear at C4025 of
IC4000?
Check a LVDS cable ?
Replcelcd panel?
Please, Call to Samsung Co. LTD.
Yes
Check a A/V cable and video signal.
Yes
1
2
Caution Make sure to disconnect the power before working on the IP board.