Ten Common Faults and Solutions of LED Display Screen

1. The display screen does not work and the green light of the sending card flashes (made into retractable type)Fault cause: the panel is not powered; The network cable is not connected properly; The receiving card has no power supply or the power supply voltage is too low; The sending card is broken; The signal transmission intermediate equipment is connected or faulty (e.g. function card, optical fiber transceiver).Troubleshooting: check and confirm that the power supply of the panel is normal; Check and reconnect the network cable; Ensure that the DC output power supply of the power supply is 5-5.2v; Replace the sending card; Check the connection or replace the function card (optical transceiver).

Ten Common Faults and Solutions of LED Display Screen 1

2. The display screen does not work and the green light of the sending card does not flashFault cause: DVI or HDMI cable is not connected properly; The copy or expansion mode is not set in the graphics card control panel; The software chooses to turn off the power supply of the large screen; The sending card is not inserted in place or there is a problem with the sending card.Troubleshooting: check DVI cable connector; Reset the copy mode; The software selects to turn on the large screen power supply; Reinsert the sending card or replace the sending card.

3. Prompt "large screen system not found" at startupFault cause: the serial port cable or USB cable is not connected with the sending card; Computer com or USB port is broken; The serial port cable or USB cable is broken; The sending card is broken; USB driver is not installed.Troubleshooting: confirm and connect the serial port cable; Replace the computer; Replace the serial port cable; Replace the sending card; Install new software or separate USB driver.

4. Long strips of the same height as the lamp board are not displayed or partially not displayed or lack colorFault cause: poor contact or disconnection of flat cable or DVI cable (applicable to submarine Series); There is a problem with the former output or the latter input of the display light panel at the junction.Troubleshooting: reinsert or replace the cable; First determine which display module is faulty, and then replace it for maintenance.

5. Some modules (3-6) are not displayedFault cause: power protection or damage; Poor contact of AC power line.Troubleshooting: check and confirm that the power supply is normal; Reconnect the power cord.

Ten Common Faults and Solutions of LED Display Screen 2

6. The whole box is not displayedFault cause: 220V power supply line is not connected properly; There is a problem with network cable transmission; The receiving card is damaged; The hub board is inserted incorrectly.Troubleshooting: check the power supply line; Confirm to replace the network cable; Replace the receiving card; Reinsert the hub.

7. Full screen flower point, picture shadow button movementFault cause: incorrect driver loader; The network cable of computer and screen is too long or of poor quality; The sending card is broken.Troubleshooting: reload the receiving card file; Reduce the length of network cable or replace it; Replace the sending card.

8. The entire display screen displays the same content for each display unitFault cause: the display connection file was not sent.Troubleshooting: reset the screen file sending, and plug 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 screen is very low and the displayed image is blurredFault cause: error in sending card program; The function card is not set correctly.Troubleshooting: restore the default setting of the sending card and save it; Set the minimum brightness value of display monitoring to more than 80.

10. Shaking or ghosting of the whole screenFault cause: check the communication line between the computer and the large screen; Check the DVI line between the multimedia card and the sending card; The sending card is broken.Troubleshooting: reinsert or replace the communication line; Punch the DVI line for reinforcement; Replace the sending card.

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