LED display 'black screen' processing method

How do we judge the black screen of the LED display screen, and how to deal with it? After you have read the following five points, it will be clear.



(1) Please make sure that all hardware including the control system has been powered on correctly. Note: +5V, do not connect reversely or wrongly.



(2) Check and confirm whether the serial port cable used to connect to the controller is loose or falling off. The LED display manufacturer recommends: If it turns black during the loading process, it is probably caused by this reason, that is, the screen is black because the communication line is interrupted due to the loosening of the communication line during the communication process. Do not think that the line cannot be loose if the display body does not move. Please check it by hand. This is very important for you to solve the problem quickly.



(3) Check and confirm whether the HUB distribution board connected to the LED display screen and the main control card is tightly connected and whether it is plugged in reverse.



(4) Please check and confirm whether the 50-core cable between the control card and the HUB distribution board is loose or inserted reversely.



(5) If your LED display interface definition does not match the provided HUB board, a black screen will appear. Please recheck whether your jumper is loose, disconnected or short-circuited. If you think that the signals such as ABCD have been mapped to each other, please check whether the OE signal is connected correctly. Reminder: LED display manufacturers strongly recommend to use the HUB distribution board that matches the display interface definition.