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LED display Repairing resolution

The demand for outdoor digital advertising continues to increase, Promote the rapid expansion of the market for LED display applications, User groups are also becoming more and more popular. What should I do with the failures that may occur during daily use? It has become an urgent problem for customers. This article has compiled a set of common problems in the daily application of LED display and a simple and effective solution.

A. The display does not work, the sending card flashes green
1.cause of issue
1) LED screen didn’t connect powered
2)The network cable is not connected well.
3)Receive card has no power or the supply voltage is too low
4)Send card is bad
5)Signal transmission intermediate device connection is faulty(eg: function card, fiber optic transceiver box

B.Troubleshooting method
1)Check to see if the screen power supply is working properly.
2)Reconnect the network cable
3)Ensure that the power supply DC output is powered at 5-5.2V
4)Replace the sending card
5)Check the connection or replace the function card (fiber transceiver box);

C.The display does not work, the sending card green light does not flash
1.cause of issue
1)DVI or HDMI cable is not connected
2)Copy or extension mode is not set in the graphics control panel
3)The software chose to turn off the large screen power supply.
2.The sending card is not inserted or there is a problem with the sending card
3.Troubleshooting method
1)Check DVI cable connector
2)Reset replication mode
3)Software selection to open large screen power supply
4)Re-insert the sending card or replace the sending card

D.Prompt “Large screen system not found” at startup
1.cause of issue
1)The serial cable or USB cable is not connected to the sending card.
2)Computer COM or USB port is bad
3)Serial cable or USB cable is bad
4)Send card is bad
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

E.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)The junction shows the former output of the light board or the latter input has a problem.
2.Troubleshooting method
1)Reinsert or replace the cable
2)First determine which display module is faulty and then replace the repair

F.Some modules (3-6 PCS) 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

G.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 network cable transmission.
3)Receive card damage
4)HUB board is inserted into the wrong position
2.Troubleshooting method
1) Check the power supply line
2)Confirm replacement of network cable
3)Replace the receiving card
4)Reinsert HUB

H.The whole screen is spent, the picture is moving
1.cause of issue
1)Drive loader is wrong
2)The network cable of the computer and screen is too long or the quality is not good;
3)Sending card is damaged
2.Troubleshooting method
1)Re-load the receiving card file;
2)Reduce the length of the cable or replace it
3)Replace the sending card;

I. Display unit displays the same content for each display unit
1.cause of issue
1)No display connection file sent
2.Troubleshooting method
1)Reset the send screen file,And when the network is connected, the network cable connected to the computer is inserted in the output port of the sending card near the indicator light.

J.The display brightness is very low and the display image is blurred.
1.cause of issue
1)Sending card program error;
2)The function card is set incorrectly;
2.Troubleshooting method
1)Restore the default settings of the sending card and save it;
2)Set the display monitor to have a minimum brightness value of 80 or higher;

K.Full screen shake or ghost
1.cause of issue
1)Check the communication line between the computer and the large screen;
2)Check the DVI line of the multimedia card and the sending card;
3)The sending card is bad;
2.Troubleshooting method
1)Reinsert or replace the communication line;
2)DVI line is inserted and reinforced;
3)Replace the sending card;