What is the cause of the black screen on the LED display?
In the process of using the LED display control system, we occasionally encounter the phenomenon that the LED display screen appears black. The same phenomenon may be caused by a variety of reasons, and even the process of the display turning black will vary due to different operations or different environments. For example, it may be black at the moment of power-on, or it may become black during the loading process, or it may become black after the transmission is completed, and so on. When encountering this phenomenon, please pay attention to the following aspects to judge the “fault”:
a. Please make sure that all hardware including the control system is powered on correctly. (+5V, do not connect reversely or wrongly)
b. Check and confirm again and again whether the serial cable used to connect the controller is loose or falling off. (If it turns black during the loading process, it is probably because of this reason, that is, the communication line is interrupted due to loose communication, so the screen goes black. Do not think that the line cannot be loose if the display body does not move Check it out by hand, it’s important if you want a quick fix.)
c. Check and confirm whether the LED display screen and the HUB distribution board connected with the main control card are tightly connected and whether they are plugged in or not.