4-11
4. Troubleshooting
4-1-6. No Picture (S-VIDEO_Y,C)
Symptom Audio is normal but no picture is displayed on the screen.-
Major
checkpoints
Check the S-Video_Y,C source
Check the SEMT01(MT8226)
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
-
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Diagnostics
2
1
No
Check a connection harness.
No
Power Indicator is off.
Lamp on, no picure.
Does the Y/C signal appear at C5104,
C5105 of IC5105?
No
Please, Contact Tech support.
Check a LVDS cable?
Replacea lcd panel?
Yes
Connect the s-video cable.
Operating a video player.
1
Yes
2
Does the digital data appear at the
output of LVDS (RA5104~RA5109)?
No
Check a IC5105
Change a main PCB ass’y
Yes
Caution Make sure to disconnect the power before working on the IP board.
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