Repair Academy
LED Display Troubleshooting
Lesson Summary
This video demonstrates a practical troubleshooting process for solving a partial black screen problem on an LED display. Instead of replacing components immediately, the technician follows a step-by-step fault elimination method: checking the signal path, power supply, receiving card output, HUB board connection, ribbon cables, and LED display modules. The video is useful for LED display repair technicians because it shows how to quickly narrow down whether the fault is caused by a loose cable, power failure, receiving card issue, HUB board problem, or a damaged LED module. This method helps reduce unnecessary part replacement and improves repair efficiency during on-site LED screen maintenance.
Tool Recommendation
LED Display Screen; LED Display Module; LED Display Cabinet; Receiving Card; Sending Card / LED Controller; HUB Board; Signal Ribbon Cable; Network Cable; Power Cable; 5V Switching Power Supply; Multimeter; LED Module Tester; Screwdriver; Spare Receiving Card; Spare Signal Cable; Spare LED Module; Computer with LED Control Software; Test Pattern Software;