If the LED display fails, it will definitely cause trouble to the insiders. But trouble is to solve, but how to solve these problems? Today, let’s learn about 10 ways to troubleshoot LED displays.
1. The display screen does not work, and the green light of the sending card flashes (made into a retractable type)
1. The cause of the failure:
1) The screen has no power supply;
2) The network cable is not connected well;
3) The receiving card has no power supply or the power supply voltage is too low;
4) The sending card is broken;
5) The signal transmission intermediate equipment is connected or faulty (such as: function card, optical fiber transceiver box);
2. Troubleshooting method:
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 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. The cause of the failure:
1) DVI or HDMI cable is not connected well;
2) The copy or extension mode is not set in the graphics card control panel;
3) The software has chosen 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:
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 up
1. The cause of the failure:
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) USB driver is not installed
2. Troubleshooting method:
1) Confirm and connect the serial port 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
Fourth, the strips of the same height as the light board are not displayed or part of them are not displayed, lacking color
1. The cause of the failure:
1) The flat cable or DVI cable (for submarine series) is not in contact or disconnected;
2) At the junction, the former output or the latter input is faulty.
2. Troubleshooting method:
1) Reinsert or replace the cable;
2) First determine which display module is faulty and then replace and repair it
Five, some modules (3-6 blocks) do not display
1. The cause of the failure:
1) Power protection or damage;
2) Poor contact of AC power cord
2. Troubleshooting method:
1) Check to confirm that the power supply is normal;
2) Reconnect the power cord
Six, the whole box is not displayed
1. The cause of the failure:
1) The 220V power supply line is not connected properly;
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
Seven, the whole screen is decorated with dots, pictures and shadows are moved
1. The cause of the failure:
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 screen displays the same content
1. The cause of the failure:
The display connection file was not sent
2. Troubleshooting method:
Reset the sending of connected screen files, and insert the network cable connected to the computer into the output port of the sending card near the indicator light when sending
9. The brightness of the display is very low and the display image is blurred.
1. The cause of the failure:
1) Error in sending card program;
2) The function card is set incorrectly
2. Troubleshooting method:
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. Shaking or ghosting of the entire screen
1. The cause of the failure:
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:
1) Re-plug or replace the communication line;
2) Insert 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.
