Samsung LA22B450C8 - Troubleshooting: No Video (HDMI - Digital Signal)

4-5
4. Troubleshooting
4-1-3. No Video (HDMI - Digital Signal)
Symptom Audio is normal but no picture is displayed on the screen.-
Major
checkpoints
Check the HDMI 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
Does the digital data appear at
R4065~R4072?
Power Indicator is off.
Lamp on, no video.
No
Check the connection
of HDMI cable?
Check a IC4000.
Change a main PCB ass’y.
Check a IC4000.
Change a main PCB ass’y.
No
Does the digital data appear at
output of LVDS Cable?
Check the LVDS cable?
Replace the LCD panel?
Please, Contact Tech support
Yes
Yes
Input a HDMI cable.
Yes
Yes
Yes
2
3
1
Caution Make sure to disconnect the power before working on the IP board.