Shenzhen Lianchengfa Technology Co., Ltd.

How to solve the fault of the LED display screen? There are many reasons why the full-color LED display screen cannot be displayed normally. Here is a summary of how the full-color LED display screen can solve this problem. If the new screen is installed and it is powered on, then it may be that the control card is not set correctly, or there is no cable (check the cable from the control card to the first piece), this problem will also occur when the 5V power supply is connected incorrectly.

If this phenomenon is suddenly found after a period of use, in addition to the failure of the control card, the biggest possibility is that the board enters the water and burns the chip or power supply. You can also try connecting a monitor with a DVI interface first to see if the DVI output signal of the graphics card is normal.

The cause of the LED display screen may also be a problem with the graphics card or a driver problem. Try to unplug the network cable on the wiring board at the rear of the monitor, and press the debug button on the receiving card to see if the screen scan is normal.

In addition, the other reasons for the display of the LED full-color display screen, the LCF editor of Liancheng has simply sorted out some for your reference:

1. The solution to the problem that the LED display screen cannot be displayed: check whether the power supply of the electronic display screen is normal and whether the 220V strong power is input.

2. The abnormal display of the light-emitting diode electronic display and the solution:

(1) Whether the parameter setting of the LED control card is correct, and whether it has been transmitted to the electronic display LED control card;

(2) Whether the communication line is normal, pay attention to whether the LED control card has input signal;

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

3. Some screens of the electronic screen have abnormal phenomena, such as black screen and blurry screen.

Countermeasures: Check whether the abnormal screen power supply is working normally; the signal line is faulty; the single component of the screen is faulty. A. There is a problem with the output.

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

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

3. Detect whether the cascaded output data port between the previous driver ICs is connected to the data port of the output interface or is short-circuited.

4. The heat dissipation of the box is poor, causing the temperature of the graphics card to rise. Countermeasures: heat dissipation. Check whether the fan is running normally, add oil to the fan, remove the dust in the box, and remove the fault after troubleshooting.

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