Main attribution of LED display field fault

From：Yulu science Technology    Date2018/2/28 16:10:00

Now, LED display has become a part of people''s life. There are various LED screens with different sizes and shapes everywhere in streets, alleys and square stations. It is a system engineering which integrates optics, structure mechanics, electronics and computer science. According to statistics, ninety of all domestic LED fault screen percent are large or small, an electronic engineer based on years of experience, summed up the main attribution of these failures, believe that with these, we can from the fault source control, improve the quality of display screen. The failure of LED display 80% is caused by the following factors: wiring harness, terminals, connectors, signal and low-voltage DC connection wiring harness and connectors, switching power modules, blower and plastic housing components. If these interfaces, cables, power supplies, and the bottom shell are not selected well, it will lead to the overall or partial black screen of the LED display screen, the flower screen, the mosaic, the no signal and so on. These are also very difficult to maintain, so in our production process is to attract attention, to reduce the failure rate. 80% of the remaining failures are caused by the following reasons: leakage of dust accumulation caused by inadequate protection level of PCBA solder joints, capacitors, terminals, LED lights and boxes, leakage of screws, hardware and hardware, and control of boards. These reasons can cause the LED display to have a blind light or highlight, a row or more rows are not bright, and lack of color. If the control card or software has problems, it will lead to abnormal image display. Outdoor LED display must be designed strictly according to the test standard, waterproof, dust-proof, wind resistant and high temperature resistant, otherwise it will be prone to all kinds of failures, and even the entire LED display will be scrapped. Besides, the operator of the display should master basic knowledge and have good habits. Besides, professional maintenance personnel can also reduce the failure rate to a certain extent.