1. LED Color Distortion
Root Causes:
- LED Lamp Bead Degradation: Individual LED lamp beads (e.g., RGB chips) may degrade or fail, causing localized color shifts.
- Control System Misconfiguration: Incorrect gamma values or white balance settings (e.g., missing 16-bit color depth mode in control software) can lead to color inaccuracies.
Solutions:
- Hardware Inspection: Use a multimeter to measure voltage in abnormal areas. Replace lamp beads if voltage deviation exceeds ±0.2V.
- Software Calibration: Reconfigure color parameters via control software (e.g., NovaLCT) using D65 white point standards to match ambient lighting.
2. Partial Display Failure or Anomalies
Common Causes:
- Signal Transmission Interruption: Oxidized HDMI or Ethernet ports in high-humidity environments disrupt signal flow.
- Driver Circuit Board Malfunctions: Electrostatic discharge (ESD) can damage constant-current driver ICs (e.g., MBI5124), halting module operation.
Troubleshooting Steps:
- Physical Inspection: Reconnect cables and clean interfaces with DeoxIT D5 anti-oxidation spray.
- Hardware Swap Test: Replace the suspected faulty driver board with a functional one to isolate the issue.
3. Daily Maintenance and Prevention
Cleaning Protocols:
- Wipe the screen surface with isopropyl alcohol solution and a microfiber cloth to avoid scratching the LED coating.
- Avoid ammonia-based cleaners (e.g., glass cleaners) to prevent yellowing of LED encapsulation.
Environmental Management:
- Maintain ambient humidity ≤70% and temperature ≤40°C. Install IP65-rated sensors for real-time monitoring.
4. Power/Response Failures
Diagnosis:
- Power Supply Check: Ensure stable input voltage (allowable fluctuation: 220V±5%).
- Control Card Status: Verify indicator lights (e.g., NovaLCT A8s STATUS light should be solid green).
Emergency Measures:
Activate redundant backup control systems if the primary control card fails (requires pre-configured dual-network signal paths).