In the process of using the advertising LED display, sometimes the LED display may not be able to load images. Next, we will talk about how to troubleshoot the problem that the LED display cannot load image problems.

1. Check if the jumper cap of the pole LED display is loose or fall off; if the jumper cap is not loose, make sure the jumper cap is in the correct direction.

2. check and confirm the LED display screen is used to connect the controller serial line is a straight line, rather than cross-line.

3. check and confirm that the display serial port cable is intact and the two ends are not loose or fall off.