A 8*0.3 Soft LED Curtain Screen display screen, EQ card (V2.12) control software, data line connected to the serial port control. After using the control software to edit the text, the text on the picture cannot be sent successfully when clicking send. What is the reason?

This situation belongs to the communication problem of the LED display, and the software prompts that the communication between the computer and the LED display has been interrupted. The reasons are as follows:

1. The data cable connector is loose or poorly connected.

If this is the reason, you can re-plug the data cable.

2. The data cable is disconnected.

This happens on many occasions, such as the bite of a mouse or human factors, which need to be tested with a multimeter.

3. Software setting error problem.

Need to reset the software, such as changing the serial port and other operations.

4. The computer's serial port is broken.

You can try another computer.

5. If there are no problems with the above, then the control card is broken, and the control card must be replaced.