No Video (Hdmi - Digital Signal) - Samsung LE32A457C1D Service Manual

4-1-3. No Video (HDMI - Digital Signal)

Symptom Audio is normal but no picture is displayed on the screen.
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Check the HDMI source
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Major
Check the SEMS01
-
checkpoints
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
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Diagnostics
1
2
3
Caution Make sure to disconnect the power before working on the SMPS/IP.
Power Indicator is off.
Lamp on, no video.
Yes
Check the connection
of HDMI cable?
Yes
Does the digital data appear at
R5055~65?
Yes
Does the digital data appear at the No
output of LVDS (RA5012~14)?
Yes
Check the LVDS cable?
Replace the LCD panel?
Input a HDMI cable.
No
No
Check a IC3001.
Change a main PCB ass'y.
No
Check a IC5001.
Change a main PCB ass'y.
No
Please, Contact Tech support
4. Troubleshooting
4-5