Samsung LE32A55*P Service Manual page 35

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.
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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 picure.
Yes
Does the Y/C signal appear at C5104,
C5105 of IC5105?
Yes
Does the digital data appear at the
output of LVDS (RA5104~RA5109)?
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 IC5105
Change a main PCB ass'y
No
Please, Contact Tech support.
4. Troubleshooting
4-11