It is recommended to restart and try.
Or:
1. First, check whether the power connection is loose or falling off; secondly, check whether the cable is firmly connected. If the problem still exists after checking, then continue. Troubleshoot other component failures.
2. After connecting the modules in series, connect them to the adapter board, and then connect the adapter board to the control card, so that you can find out the problem. Because the wiring sequence of the adapter board has a one-to-one correspondence with the module rows, but because the modules in the previous row are connected to the next row, the order is disrupted. The normal situation is one-to-one correspondence, so that the text content can be displayed in normal lines, so this is the cause of the fault. As long as the corresponding relationships are connected neatly one by one, everything will return to normal. If there is no problem with the corresponding relationship, then we need to consider the output of the adapter board.