If the LED display fails, it is definitely creating trouble for the industry. But problems are meant to be solved, just how to solve them? Today with you to understand the LED display troubleshooting 10 methods.
First, the display does not work, the green light of the sending card flashes (make it retractable)
1. Fault cause:
a. The screen body is not powered;
b. The network cable is not properly connected.
c. The receiving card has no power supply or the power supply voltage is too low;
d. The sending card is broken;
e. 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 is 5-5.2V;
4) Replace the sending card;
5) Check the connection or replace the function card (optical fiber transceiver box);
Second, the display does not work, the green light of the sending card does not blink
1. Fault cause:
a.DVI or HDMI cable is not connected properly;
b. The copy or extend mode is not set in the graphics card control panel;
c. The software chooses to turn off the power supply of the large screen;
d. The sending card is not inserted properly or there is a problem with the sending card;
2. Troubleshooting method:
1) Check DVI cable connector;
2) Reset the replication mode;
3) The software selects to turn on the large screen power supply;
4) Re-insert the sending card or replace the sending card;
3. Prompt “Large screen system not found” at startup
1. Fault cause:
a. The serial cable or USB cable is not connected to the sending card.
b. Computer COM or USB port is bad;
c. The serial cable or USB cable is faulty.
d. The sending card is broken;
e. The USB driver is not 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 the new version of the software or install the USB driver separately
Fourth, the strip with the height of the lamp board is not displayed or part is not displayed, and the color is lacking
1. Fault cause:
a. Flat line or DVI line (for submarine series) contact is not good or disconnected;
b. There is a problem with the former output or the latter input of the light board displayed at the junction
Troubleshooting method:
1) Reinsert or replace the cable;
2) First determine which display module is faulty and then replace it for maintenance
5. Some modules (3-6 blocks) are not displayed
1. Fault cause:
Power supply protection or damage;
B. AC Power cables are not properly connected
Troubleshooting method:
1) Test and confirm that the power supply is normal;
2) Reconnect the power cable
Six, the whole box is not displayed
1. Fault cause:
a. The 220V power supply cable is not connected properly.
b. Network cable transmission is faulty.
c. The receiving card is damaged;
The HUB board is improperly inserted
Troubleshooting method:
1) Check the power supply line;
2) Confirm the replacement of the network cable;
3) Replace the receiving card;
4) Reinsert the HUB
Seven, the whole screen flower point, picture shadow button movement
1. Fault cause:
a. The driver loading program is incorrect;
b. Computer and screen cable is too long or poor quality;
Send card broken
Troubleshooting method:
1) Reload the receiving card file;
2) Shorten the length of the network line or replace it;
3) Replace the sending card
Each display unit of the entire display displays the same content
1. Fault cause: The display connection file is not sent
2. Troubleshooting method: Reset the sending screen connection file, and connect the computer network cable to the output outlet near the indicator on the sending card when sending
9, the brightness of the display is very low, and the display image is fuzzy.
1. Fault cause:
a. Sending card program error;
b. The function card Settings are incorrect
Troubleshooting method:
1) Restore the default Settings of the sending card and save them;
2) Set the minimum brightness value of the monitor screen to more than 80;
10, the whole screen shaking or double shadow
1. Fault cause:
Check the communication line between the computer and the large screen;
Check the DVI cable of the multimedia card and the sending card;
c. The sending card is broken.
Troubleshooting method:
1) Reinsert or replace the communication cable;
2) Insert and reinforce DVI cable;
3) Replace the sending card.
Understand these ten common LED display faults and emergency solutions, you do not have to worry too much about the temporary failure of the display, because you can completely solve it.
