During the use of full color LED display devices, it is inevitable to encounter malfunction issues at times. Today, we will introduce how to distinguish and judge the fault diagnosis methods of full color LED display screens.
Step 1: Check if the graphics card settings section is set properly. The setting method can be found in the electronic file of the CD, please refer to it.
Step 2: Check the basic connections of the system, such as DVI cables, network cable sockets, connection between the main control card and the computer PCI slot, serial cable connection, etc.
Step 3: Check if the computer and LED power system meet the usage requirements. When the power supply of the LED screen is insufficient, it will cause the screen to flicker when the display is close to white (with high power consumption). A suitable power supply should be configured according to the power supply requirements of the box.
Step 4: Check if the green light on the sending card flashes regularly. If it does not flash, go to step 6. If it does not, restart and check if the green light flashes regularly before entering Win98/2k/XP. If it flashes, go to step 2 and check if the DVI cable is connected properly. If the problem is not solved, replace it separately and repeat step 3.
Step 5: Please follow the software instructions to set up or reinstall before setting up until the green light on the sending card flashes. Otherwise, repeat step 3.
Step 6: Check if the green light (data light) of the receiving card is flashing synchronously with the green light of the sending card. If it is flashing, turn to Step 8 to check if the red light (power supply) is on. If it is on, turn to Step 7 to check if the yellow light (power protection) is on. If it is not on, check if the power supply is reversed or there is no output from the power source. If it is on, check if the power supply voltage is 5V. If it is turned off, remove the adapter card and cable and try again. If the problem is not resolved, it is a receiving card fault, Replace the receiving card and repeat step 6.
Step 7: Check if the network cable is properly connected or too long (standard Category 5 network cables must be used, and the longest distance of network cables without repeaters is less than 100 meters). Check if the network cable is made according to the standard (please refer to installation and settings). If the problem is not solved, it is a faulty receiving card. Replace the receiving card and repeat step 6.
Step 8: Check if the power light on the large screen is on. If it is not on, go to Step 7 and check if the adapter interface definition line matches the unit board.
Attention: After most screens are connected, there is a possibility of some parts of the box having no screen or a blurred screen. Due to the loose connection of the RJ45 interface of the network cable or the lack of connection to the power supply of the receiving card, the signal may not be transmitted. Therefore, please unplug and plug the network cable (or replace it), or plug in the power supply of the receiving card (pay attention to the direction) to solve the problem.
Post time: Nov-24-2023
