Why is the LED display screen black? At present, the LED display industry is getting more and more sandstorms, and many friends are talking about it. The LED display industry is quickly reshuffled. If the operation is improper, or the technical processing is not in place, the problems faced can be imagined. The "black screen" fault of the LED display is particularly important in daily life. How do we judge the black screen of the LED display screen, and how to deal with it? After you 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 double-check 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 likely to be caused by this reason, that is, the screen is black because the communication line is interrupted during the communication process. Don't think that if the LED display does not move, the line cannot be loosened. 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 inserted backwards.

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

  (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, open or short-circuited. If you think that the ABCD and other signals have been one-to-one correspondence, please check whether the OE signal is connected correctly.

  Tips from Topsun Optoelectronics: LED display manufacturers strongly recommend using a HUB distribution board that matches the definition of the display interface.

  If you have mastered the above points, you will be able to handle the "fault" of the LED display screen that you usually encounter with a black screen. Today I will share the above experience with you, hoping to help you solve the problem.