The method of testing an LED display mainly includes preparing necessary testing tools and operating in accordance with basic steps. The specific testing methods and steps are as follows:
1. Prepare Testing Tools
◦ Electric soldering iron and desoldering pump: For soldering and disassembling electronic components in the LED display.
◦ 5V regulated power supply: Provide a stable power supply for the receiving card and the repaired modules or unit boards.
◦ Electric screwdriver: For quickly disassembling modules or unit boards to improve testing efficiency.
◦ Computer and sending card: The computer is used to run testing software, and the sending card sends programs to the receiving card.
◦ Receiving card and HUB board: The receiving card receives the program from the sending card and displays it on the LED display; the HUB board is used to observe the fault phenomenon of modules or unit boards.
◦ Multimeter: For detecting specific faults of modules or unit boards, such as short circuit and open circuit.
◦ Tweezers, scissors, wire cutters: Auxiliary tools for processing small electronic components and connecting wires.
2. Basic Testing Steps
◦ Determine HUB board type: Confirm the consistency of flat cable interface definitions according to the HUB board type used by the module or unit board for correct connection and testing.
