How to solve the problem of display black screen

 In control system used in the process, we occasionally meet the LED display, the phenomenon of the black screen.The same kind of phenomenon may be caused by different reasons, even display blackening process will vary due to different operation or due to the different environment.Such as it may be a moment of electricity is black, may also be black in the loading process, also can be in after sending black and so on.You may refer to encounter this kind of phenomenon, please note the following aspects to judge "failure"