I’m troubleshooting an LED display system where the screen powers on correctly, but the image appears misaligned and incorrectly scaled.
Current situation:
NovaStar control system in use
Basic configuration completed in SmartLCT
Screen powers on normally
Image shows horizontal or vertical misalignment
Display aspect ratio does not match the physical screen
Screen and connection details:
Uniform LED modules
Same receiver card model across the screen
Ribbon and network cables checked
Re-sending configuration does not resolve the issue
Questions for those with hands-on experience:
1.Is this more commonly caused by resolution settings or receiver card mapping issues?
2.Does the physical module arrangement directly affect the final image layout?
3.Is there a recommended troubleshooting order to quickly isolate the cause?
Looking for practical configuration and debugging experience, not general setup advice. Thanks!
This type of issue — where the screen lights up but the image is misaligned or scaled incorrectly — is usually best approached from mapping logic and resolution matching, rather than hardware failure.
Likely causes:
If the entire screen powers on but the image is offset or stretched, it’s more often related to receiver card mapping order or incorrect resolution settings rather than faulty hardware.
Physical layout vs mapping:
The physical module layout and signal routing direction must exactly match the mapping direction defined in SmartLCT. A mismatch in even one row or column can cause visible misalignment.
Resolution verification:
It’s important to confirm that the configured total resolution matches the actual physical resolution of the screen, especially for non-standard or custom aspect ratios.
Recommended troubleshooting order:
Verify module and receiver card resolution
Check screen layout direction in SmartLCT
Re-map the screen according to actual cable routing
Only then inspect signal cables or receiver cards
In most real projects, issues like this are resolved by correcting the mapping logic rather than replacing hardware.