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Common Faults and Troubleshooting Methods of LED
(2021/9/22 16:42:47)

 The LED display does not work, the processor is working properly and malfunctions

1. The display has no power supply: check whether the power supply is normal
2, the display screen network cable is not connected properly: check and reconnect the network cable
3, the receiving card has no power supply or the power supply voltage is too low: make sure that the DC output power supply of the power supply has a voltage of 5V

The  LED display does not work, no input signal from the processor troubleshooting
1. DVI or HDMI cable is not connected properly: check whether the DVI or HDMI cable connector is in close contact;
2, the copy or extended mode is not set in the control panel of the graphics card: reset the copy mode or extended mode;
3, input signal source selection error: correctly set the corresponding signal source in the processor

Troubleshooting of the whole screen of the LED display
1. The connection network cable or DVI/HDMI cable between the computer and the screen is too long: shorten the length of the network cable and DVI/HDMI;
2, the DVI/HDMI cable connecting the computer and the processor is damaged: replace it;
3, computer graphics driver failure: reinstall the graphics driver or replace;

Each display unit of the entire display shows the same content
The display connection file parameters were not sent: reset the parameters of sending the connection file

The brightness of the LED display is very low, and the display image is blurred.
The processor program error: set the minimum brightness value of the display monitor to be above 80;

Some modules (blocks 1-6) do not display faults
1. Power protection or damage: check to confirm that the power supply is normal;
2. The AC power cord is in poor contact: reconnect the power cord;
3, module and receiving card cable failure: unplug the cable or replace;

The entire cabinet of the LED display does not show faults
1. The 220V power supply line is not connected properly: check the 220V wire;
2, network cable transmission failure: re-plug or replace;
3, the receiving card is damaged: replace the receiving card;
4, the switching power supply is damaged: replace the power supply;

Troubleshooting of shaking or ghosting of the entire screen of the LED display
1. Check the communication line between the computer and the large screen: re-plug or replace the communication line;
2, check the DVI/HDMI cable of the processor: re-plug the DVI/HDMI cable to reinforce;
3, processor failure resolution: restart the machine

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