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4-1-6. No Picture (S-VIDEO_Y,C)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Check the S-Video_Y,C source
-
Major
Check the SEMT01(MT8226)
-
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.
Power Indicator is off.
Lamp on, no picure.
Yes
Does the Y/C signal appear at C4080,
C4081 of IC4001?
Yes
Does the digital data appear at the
output of LVDS (RA4074~RA4079)?
Yes
Check a LVDS cable?
Replacea lcd panel?
2
1
Connect the s-video cable.
No
Operating a video player.
No
Check a connection harness.
No
Check a IC4001
Change a main PCB ass'y
No
Please, Contact Tech support.
4. Troubleshooting
4-11
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