LED display has gradually become the mainstream product in the market. It can be seen everywhere in outdoor buildings, stages, stations and other places, but failures will inevitably occur during use. How to troubleshoot the LED display? Here comes the quick solutions for led display troubleshooting.
1.The LED display screen does not work, and the green light of the sending card does not flash
Cause of failure | Troubleshooting method |
DVI or HDMI cable is not connected properly | check DVI line connector |
The copy or expansion mode is not set in the graphics card control panel | Reset the replication mode |
The software chose to turn off the large screen power supply | The software selects to turn on the large screen power supply |
The sending card is not inserted in place or there is something wrong with the sending card | Reset the sending card or replace the sending card |
2.The LED display screen does not work, and the green light of the sending card flashes (made into retractable type)
Cause of failure | Troubleshooting method |
there is no power supply for the screen body | check and confirm that the power supply of the screen is normal |
The network cable is not connected well | Check the reconnection network cable |
The receiving card has no power supply or the power supply voltage is too low | Ensure that the DC output power supply of the power supply is 5-5.2 V |
The sending card is broken | Replace the sending card |
Signal transmission intermediate equipment is connected or faulty (e.g. function card, optical fiber transceiver box) | Check the connection or replace the function card (fiber transceiver box) |
3. Prompt "Big screen system not found" when starting
Cause of failure | Troubleshooting method |
serial port line or USB line is not connected with sending card | confirm and connect the serial line |
Computer COM or USB port is bad | Replace the computer |
Serial port line or USB line is broken | Replace serial port line |
The sending card is broken | Replace the sending card |
USB driver is not installed | Install the new software or install the USB driver separately |
4.The strip with the same height as the lamp board does not display or partially does not display, and lacks color
Cause of failure | Troubleshooting methods |
Flat cable or DVI cable (suitable for submarine series) is not in good contact or disconnected | reinsert or replace the cable |
The junction shows that there is something wrong with the former output or the latter input of the lamp board | First determine which display module is faulty and then replace it for maintenance |
5.The whole cabinet is not displayed
Cause of failure | Troubleshooting method |
220V power supply line is not connected properly | Check the power supply line |
There is a problem with network cable transmission | onfirm the replacement of network cable |
The receiving card is damaged | Replace the receiving card |
HUB board insertion is misplaced | Re-insert HUB |
6.Some modules (3-6 pieces) are not displayed
Cause of failure | Troubleshooting method |
Power protection or damage | Detect and confirm that the power supply is normal |
AC power cord contact is not good | Reconnect the power cord |
7.Flower points on the whole screen, and the shadow moves
Cause of failure | Troubleshooting method |
incorrect driver loader | re-operate and load the receiving card file |
The network cable of computer and screen is too long or of poor quality | Reduce the length of network cable or replace it |
The sending card is broken | Replace the sending card |
8. Each display unit of the whole display screen displays the same content
Cause of failure: Display connection file was not sent.
Troubleshooting method: Reset the sending screen file, and plug the network cable connected to the computer in 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 unclear
Cause of failure: error in sending card program; The function card is not set correctly.
Troubleshooting method: restore the default setting of sending card and save it; Set the minimum brightness value of display monitor to above 80.
10. The whole screen shakes or ghosts
Cause of failure | Troubleshooting method |
Check the communication line between the computer and the big screen | reinsert or replace the communication line |
Check the DVI line between multimedia card and sending card | Reinsert the DVI line into the reinforcement |
The sending card is broken | Replace the sending card |
English
Arabic
Chinese (Simplified)
Dutch
French
German
Italian
Japanese
Korean
Portuguese
Russian
Spanish