LED display screen black screen solution.P3.91 outdoor/indoor led screen display

　　The LED display is widely used in various industries to display text, graphics, images, animations, markets, videos, video signals, etc., playing various roles, becoming an indispensable part of many industries. However, in practical applications, the LED display will inevitably encounter a variety of faults, especially the LED display black screen phenomenon. Let's analyze the black screen factors:

　　It is understood that the 80%failure of the LED display is the following factors: the wire beam, terminal, connector, signal and low -voltage DC connector beam and connectors, switch power modules, fans, plastic shell components. If these interfaces, cables, power supply, and bottom shells are not selected, they will cause the LED display overall or local black screen, flower screen, mosaic, no signal, etc.

　　During the use of control systems, the phenomenon of black screens occasionally encountered the LED display. The same phenomenon may be caused by various reasons, and even the process of turning the display screen will vary from operations or different environments. For example, it may be black at the moment of powering, or it may turn black during the loading process, and it may be black after the sending.

　　The LED display has a black screen phenomenon caused by the power supply problem. The main solutions are:

　　1. Please ensure that all hardware, including the control system, has all been correctly called. (Note:+5V, do not connect to the wrong, get wrong)

　　2. Check and repeatedly confirm whether the serial lines used to connect the controller are loose or falling off. (LED display manufacturer suggests: If it turns black during the loading process, it is likely to be caused by this reason, that is, the screen is interrupted due to the loose communication line during the communication process, so the screen is black. Do not think It is impossible to loosen. Please check it. This is important for you to solve the problem quickly.)

　　3. Check and confirm whether the connected LED display and the HUB distribution board connected to the main control card are tightly connected and inverse.

　　4. Please check and confirm whether the 50 -core row line between the connection to the Lingxin Control Card and the HUB allocation board is loose or inserted.

　　5. If the definition of your display interface is not matched with the HUB board provided, there will be black screen phenomena. Please re -check whether your jump is loose, disconnected or short -circuit. If you think that the signals such as ABCD have corresponded, please check whether the OE signal is connected correctly. (LED display manufacturers strongly recommend using the HUB allocation board that matches the display interface of the display)

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