1. Control system cost: the display sending card and receiving card fees slim led modules, are generally used Shenzhen Linsn synchronous control system. The main display area size is determined according to the number of cards, in general, the larger the area, the higher the density, the more the number of cards received led module with Division I accounted for separately. 2. The cost of equipment: computers, air conditioners, audio amplifier, power distribution equipment, multi-function control card, surge arresters, and LED video processor, site wiring. (Of course, some of the equipment which the user can also bring their own good Shenzhen led module, of course, less than the device may not be equipped, our company will recommend a reasonable scheme.) Main Gao Jin photoelectric led unit board wholesale, below to share with you led unit board will arise mainly divided into four points: 1, the entire board is not shining: mainly because of the power unit board missed or inner plate line connection error, resulting circuit the positive and negative difference. 2, the board is not shining, transporting function properly: this is due to damage caused by the built-in circuit board can be 74HC138 4 feet and 5 feet caused by short circuit. 3, every three non-shiny: In 4953 the board damage. 4, interlacing flashes: to be a circuit problem can be analyzed. ①: Check the cell plate built 74HC245 and 74HC138 whether Weld. ②: use the multimeter to measure whether the 74HC138 first pin voltage is about 2.5V, there will replace 74HC138③: measuring electricity transmission status lilies with ICA signals. Jinan led module, Gao Jin photovoltaic (certified), led module provided by Jinan Optoelectronics Technology Co., Ltd. Gao Jin. Jinan Gao Jin Optoelectronics Technology Co., Ltd. (www.zhkyled.com) is an industry leader in Jinan, Shandong, liquid crystal devices, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Gao Jin photoelectric leadership with the staff warmly welcome all inquiries negotiations to create high gold Photoelectric better future.