10 Effective Ways To the Troubleshoot LED Display

1. The display screen does not work, and the green light of the sending card flashes (makes it retractable)

1.  malfunction the reason:

1) The screen has no power supply;

2) The network cable is not connected properly;

3) The receiving card has no power or the power supply voltage is too low;

4) The sending card is broken;

5) The signal transmission intermediate equipment is connected or is faulty (such as: function card, optical fiber transceiver box);

2. Troubleshooting method of LED display:

1) Check that the power supply of the screen body is normal;

2) Check and reconnect the network cable;

3) Ensure that the DC output power supply of the power supply is within 5-5.2V;

4) Replace the sending card;

5) Check the connection or replace the function card (optical fiber transceiver box);

2. The display does not work, and the green light of the sending card does not flash

1. malfunction the reason:

1) DVI or HDMI cable is not connected well;

2) The copy or extend mode is not set in the graphics card control panel;

3) The software chose to turn off the power of the large screen;

4) The sending card is not inserted in place or there is a problem with the sending card;

2. Troubleshooting method of LED display:

1) Check the DVI cable connector;

2) Reset the copy mode;

3) The software chooses to turn on the large screen power;

4) Reinsert the sending card or replace the sending card;

3. Prompt “The big screen system is not found” when starting

1. malfunction the reason:

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

2) The computer COM or USB port is broken;

3) The serial port or USB cable is broken;

4) The sending card is broken;

5) No USB driver installed;

2. Troubleshooting method of LED Display:

1) Confirm and connect the serial cable;

2) Replace the computer;

3) Replace the serial cable;

4) Replace the sending card;

5) Install the new version of the software or install the USB driver separately;

4. The strip with the same height as the light board is not displayed or part of it is not displayed, lacking color

1. malfunction the reason:

1) The flat cable or DVI cable (for submarine series) is not in contact or disconnected;

2) The junction shows that the former output or the latter input is problematic;

2. Troubleshooting method of LED Display:

1) Reinsert or replace the cable;

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

5. Some modules (3-6 blocks) are not displayed

1. malfunction the reason:

1) Power protection or damage;

2) The AC power cord is in poor contact;

2. Troubleshooting method:

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

2) Reconnect the power cord;

6. The whole box is not displayed

1. malfunction the reason:

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

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

3) The receiving card is damaged;

4) HUB board is inserted misplaced;

2. Troubleshooting method:

1) Check the power supply line;

2) Confirm to replace the network cable;

3) Replace the receiving card;

4) Re-insert the HUB;

7. Full screen with dots, pictures and shadows

1. malfunction the reason:

1) The driver loader is wrong;

2) The network cable between the computer and the screen is too long or the quality is not good;

3) The sending card is broken;

2. Troubleshooting method:

1) Re-operation to load the receiving card file;

2) Reduce the length of the network cable or replace it;

3) Replace the sending card;

8. Each display unit of the entire display shows the same content

1. malfunction the reason:

The display connection file was not sent

2. Troubleshooting method:

Reset the sending of connected screen files, and plug the network cable connected to the computer into the output port of the sending card near the indicator when sending

9. The display brightness is very low and the display image is blurred

1. malfunction the reason:

1) Error in sending card program;

2) The function card is set incorrectly;

2. Troubleshooting method of LED Display:

1) Restore and save the default settings of the sending card;

2) Set the minimum brightness value of the display monitor to be above 80;

10. The whole screen is shaking or ghosting

1. malfunction the reason:

1) Check the communication line between the computer and the large screen;

2) Check the DVI cable of the multimedia card and the sending card;

3) The sending card is broken;

2. Troubleshooting method of LED Display:

1) Re-plug or replace the communication line;

2) Punch and reinforce the DVI cable;

3) Replace the sending card;

Knowing the common faults and emergency solutions of these top ten LED Display screens, you don’t have to worry too much about the temporary failures of the display screen, because you can completely solve them.