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4-1-3. No Video (HDMI - Digital Signal)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Check the HDMI source
-
Major
Check the IC3013
-
checkpoints
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
Diagnostics
1
2
3
Caution
Make sure to disconnect the power before working on the IP board.
3
2
1
Power Indicator is off.
Lamp on, no video.
Yes
Check the connection
of HDMI cable?
Yes
Does the digital data appear at
RA3668~RA3671 around IC3013?
Yes
Does the digital data appear at output
of LVDS (TP7025~TP7038 ,
TP7040~TP7053)?
Yes
Check the LVDS cable?
Replace the LCD panel?
Input a HDMI cable.
No
No
Check a IC3013
Change a main PCB ass'y.
No
Check a IC7001
Change a main PCB ass'y.
No
Please, Contact Tech support
4. Troubleshooting
4-5
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