With the rapid development of LED display screens, LED display screens are now almost everywhere, whether indoors or outdoors. During the use of LED electronic display screens, the entire LED screen or some modules are not bright. So what are the reasons why the entire LED screen is not bright or part of it is not bright?
There are six main reasons why the entire LED display screen is not bright
1.Data cable problem: The network cable is loose or falls off, causing the entire screen to be dark.
2. Screen power problem: There is a problem with the power supply of the entire screen, causing all of it to be dark. A problem with the 5v power supply that powers the first receiving card will cause the receiving card to not work properly, and will also cause the entire screen to be dark;
3. Receiving card problem: There is a problem with the first receiving card connected to the sending card, which may cause the entire LED display screen to be dark;
4. Graphics card problem: The graphics card is damaged or the interface is loose, resulting in data cannot be collected; the graphics card is broken, resulting in data collection and sending failure;
5. Sending card problem: The sending card is damaged, resulting in data cannot be received or sent;
6. Computer software problem: The computer LED control software is reset, and the computer firewall restricts the use of the control software, which will cause this problem.
The main reasons why some modules in the LED electronic display screen are not lit are:
- Check whether the power connection line, the 26P cable between the unit board and the indicator light of the power module are normal.
- Use a multimeter to measure whether the unit board has normal voltage, and then measure whether the voltage output of the power module is normal. If not, it is judged that the power module is broken.
- Measure the low voltage of the power module, adjust the fine-tuning (fine-tuning of the power module near the indicator light) to make the voltage reach the standard.
LED display screen is an electronic display screen composed of LED dot matrix. It changes the screen display content form such as text, animation, picture, video in time by turning on and off the red and green light beads, and controls the component display through modular structure. It is mainly divided into display module, control system and power supply system.
Led display screen is mainly used in shopping malls, banks, enterprises and institutions, stadiums, competition venues, exhibition halls, exhibition halls, ticket halls, reception halls, multi-function rooms, hotels, banquet halls, conference rooms, shopping malls, schools, cinema LED display screens, auditoriums, airports, stations, securities centers, exhibition halls, large entertainment plazas, wedding LED display screens, performance LED display screens, special theaters and other places.
Conclusion
In general, the LED display screen may not light up due to power problems (such as power failure or damage, insufficient voltage), control system failure (such as control card failure, control software setting error), signal transmission problems (such as loose or disconnected signal lines, signal interference), module or unit board failure (such as module damage, poor contact of unit board), environmental factors (such as high humidity, high temperature), software setting problems (such as display parameter setting error, program file damage or loss) or hardware failure (such as lamp bead damage, driver IC failure).
Step by step troubleshooting these problems can effectively locate and solve the problem of the display screen not lighting up.
