No Picture (Video_Cvbs) - Samsung LA40A350C1X Service Manual

4-1-5. No Picture (Video_CVBS)

Symptom Audio is normal but no picture is displayed on the screen.
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Check the Video Source
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Major
Check the M-star
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checkpoints
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
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Diagnostics
1
2
Caution Make sure to disconnect the power before working on the IP board.
Power Indicator is off.
Lamp on, no picture.
Yes
Does the signal appear at C5064
or C5061 of IC5001?
Yes
Check a LVDS cable ?
Replcelcd panel?
Yes
Please, Call to Samsung Co. LTD.
No
Check a A/V cable and video signal.
No
Check a connection harness.
4. Troubleshooting
4-9