Samsung PS43E490B1WXXH Service Manual page 34

4. Troubleshooting
■ No Video
•
Symptom
•
Major Checklist
•
Diagnostics
4-4
Audio is normal but no picture is displayed on the screen.
The output voltage of the Main SMPS.
This may happen when the LVDS cable connecting the Main Board and the Panel is
disconnected.
LVDS Cable
<Rear view of 43">
LVDS Cable
<Rear view of 51">
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Check the LED
operation.