Good display effect and stable and reliable performance are one of the criteria for evaluating the quality of LED display screens. In actual use, the LED display screen sometimes flashes irregularly and the screen is full of vertical lines. This not only affects the rendering of the picture quality, but also affects the viewing mood and brings discomfort to people. So, what causes the LED display to flicker? What are the ways to deal with different failures?
Causes of LED display flicker
The LED display is composed of four parts: the control system, the LED chassis, the steel structure of the screen, and the power distribution system. The control system is responsible for receiving, converting, and processing various external signals and converting them into signals that can be recognized by the display; and the LED chassis is the core part of the LED display, which is responsible for receiving and processing external signals and converting them into images for display. The power distribution system is the basis for ensuring the normal operation of the display screen. Therefore, various failures of the display screen are closely related to them. The causes of LED display flicker are roughly divided into the following categories:
Outdoor led display
1. The driver loader is wrong; the full name of the driver is device driver, which contains information about the hardware. Without the driver, the hardware device cannot be started; if the driver is loaded incorrectly, problems such as flashing and black screens will appear.
2. The display control system of the sending card, control card, splicing device, etc. is faulty.
3. The network cable is in poor contact, signal transmission is faulty, or the network cable is too long.
4. Poor contact between the power supply and the control card, resulting in a short circuit.
5. The heat dissipation of the screen is not good, resulting in unstable output voltage and current of the power supply.
6. The problem of the module itself.
7. The frequency of the playing host is different from the frequency of the control card.
8. The graphics card is faulty, especially when the graphics card is output to the LCD display, it also flickers.
Solutions to different flashing status of LED display
1. The whole screen has dots, overlapping images and shadows, and screen twisting. Generally, the driver is loaded incorrectly or the sending card is damaged. Need to check, reinstall the driver or replace the sending card.
2. Irregular flicker, usually a system frequency problem. Need to adjust the system setting parameters or replace the system.
3. The flickering state of dots is usually caused by graphics card driver, sending card resolution setting problem, power supply problem (insufficient power supply, information clutter, electromagnetic interference).
4. There are irregular white borders and flickers around the text on the display screen, and the text is sometimes absent. This state is generally a problem with the graphics card settings. Just cancel the "Display hidden shadows under the menu" in the display properties of the graphics card settings, and the "Smooth edge transition effect" will be OK.
5. If the display control system supports 3D display, but the screen has not upgraded the relevant 3D program, the whole screen will also flicker. At this time, you need to set the control system to 2D mode or upgrade the 3D program of the screen.
6. If the screen area of the single network port is flickering, the network port may be in poor contact, or the input and output equipment of the related control card and receiving card may be faulty or damaged.
When using LED displays, a stable signal environment is particularly important. For users, saving time, energy and cost is the most important thing. Therefore, when users encounter related problems with the product, in addition to solving the above methods, the most convenient way is to choose a trustworthy product brand. And suppliers. Therefore, this requires suppliers to have high-quality products and a complete after-sales service system.
