Full color LED display screen processing method

2020-06-03 14:29:21 hongling

Full color LED display screen processing method

Project overview:

        How to solve the failure of LED display screen? There are various reasons why the full-color LED display screen cannot display normally.

        If the new screen is installed and powered on, it may be that the control card settings are not scanned correctly, or the cable is not inserted correctly (check the cable from the control card to the first board), and the wrong 5V power supply will also cause this problem.

        If this phenomenon is suddenly discovered after using it for a period of time, in addition to the failure of the control card, the biggest possibility is that the board enters the water and burns the chip or the power supply.

        You can also try to connect a DVI interface monitor first, and see if the signal of the DVI output port of the graphics card is normal. The resolution of the DVI interface is 1024*768 for the general Lingxingyu card. The cause of the LED display flower screen may also be a graphics card problem or a driver problem. Try to unplug the network cable of the receiving card behind the display and press the debug button on the receiving card to see if the screen scan is normal.

        In addition, other reasons for the full-color LED display flower screen are also provided for your reference:

        1. The LED display screen cannot be displayed

        Solution: Check whether the power supply of the electronic display is normal and whether there is 220V strong power input

        2. The LED electronic display does not display properly, the screen


        (1) Whether the parameter setting of the LED control card is correct, and whether there is a signal transmitted to the LED display card of the electronic display screen;

        (2) Whether the communication line is communicating normally, check whether the LED control card has signal input;

        (3) Whether the 5V power supply of the LED control card is normal;

        3. Some screens of the electronic display screen display abnormally, such as black screen and flower screen

        Solution: Check whether the abnormal display power supply is working properly; the signal transmission line is faulty; the single module of the screen is faulty.

        A. There is a problem with the output

        1. Check whether the line from the output interface to the signal output IC is connected or short-circuited.

        2. Check whether the clock latch signal of the output port is normal.

        3. Check whether the cascade output data port between the last driver IC is connected to the data port of the output interface or whether it is short-circuited.

        4. The heat dissipation of the chassis is not good, resulting in the temperature rise of the graphics card.

        Solution: Eliminate heat dissipation.

        Check whether the fan is running normally, add oil to the fan, clean the dust in the chassis, and solve the heat dissipation problem.

        5. Reinstalling the system, the graphics card or monitor does not support high resolution.


        (1) Restart the computer, continuously press the F8 key, in the advanced boot menu, select enter "safe mode" to enter the login system, and then enter the display settings under windows, select the 16-color state, click the "apply" button, click "OK "Button.

        (2) Restart the computer. In the normal Windows mode, enter the device manager, delete the graphics driver, and restart the computer.

label: LED display