How to solve the LED screen flashing

  Question: When the LED bar screen flashes, all the lower part of the screen cannot be flashed without any lack of it, with 2 lines on and two lines on black. What's the matter with this question?

  Solution:

      1: Check whether the height of the screen is accurate

　　2: Check if there is any doubt about the signal line from the control card to the module

　　3: Check if there is any question about the top module

　　4: Check the interface of the row of modules in question by the control card

　　5: Check the wiring of the previous unit board that is in question

　   6, check the power usage status, is there too many boards? The power supply may be in doubt as time goes by

　　7. Check the control card, suggest to turn it all on to see if there are any doubts. If you have a lunch box, compare the two cards to see if they are in doubt.

　　 8. There are questions about viewing all the screens. From the picture, it appears that the interlacing is not bright. See which unit board is broken, and try a different cable. Bright 2 lines and 2 black lines. Usually LB is in doubt.

　　 9. Assuming that the flashing of only the following modules is chaotic, then perhaps the direction of the modules and the modules were reversed when assembling the outdoor screen. Pay attention to the module direction indicated on the back of the module.

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