What are the problems when LED display does not display or display incomplete?

LED display does not display or display incomplete fault causes and troubleshooting methods

l prompt “Large screen system not found” when starting up

1. cause of issue:

1) The serial cable or USB cable is not connected to the sending card;

2) The computer COM or USB port is bad;

3) The serial cable or USB cable is broken;

4) The sending card is broken;

5) No USB driver installed

2. Troubleshooting method:

1) Confirm and connect the serial cable;

2) Replace the computer;

3) Replace the serial cable;

4) Replace the sending card;

5) Install new software or install USB driver separately;

l The strips with the same height as the light board are not displayed or partially not displayed, lacking color

1. cause of issue:

1) Flat cable or DVI cable (for submarine series) is not well contacted or disconnected;

2) There is a problem with the output of the former or the input of the latter at the junction

2. Troubleshooting method:

1) Re-insert or replace the cable;

2) First determine which display module is faulty and then replace the repair;

l Some modules (3-6 blocks) are not displayed

1. cause of issue:

1) Power protection or damage;

2) AC power cord is not in good contact

2. Troubleshooting method:

1) Check to confirm that the power supply is normal;

2) Reconnect the power cord;

l The entire cabinet is not displayed

1. cause of issue:

1) The 220V power supply line is not connected;

2) There is a problem with the transmission of the network cable;

3) The receiving card is damaged;

4) HUB board is inserted into the wrong position

2. Troubleshooting method:

1) Check the power supply line;

2) Confirm the replacement of the network cable;

3) Replace the receiving card;

4) Re-insert HUB;