For the sake of improving the cost structure of LED lighting products, to accelerate the market through the application of universal unit blocks down the terminal price, the development of LED lighting applications vendors have been actively developing the optical / electrical module is highly integrated, integrated design modules! The so-called optical / electrical integrated design unit board, that is, the LED lighting of LED components, and the driver circuit / protection circuit is provided with a top PCB circuit board p3.75 unit boards, this way, at least from the previous amount of PCB requires two pieces (LED module lighting modules, LED light source driving module), if the light source and driver module integration, we can reduce a PCB board, the two modules can also be used on the PCB copper lines directly connected, without through connections with the line and then assembled. LED unit board does not shine a row, check whether the line output pin and 4953 feet through. 2, check 138 is normal. 3, 4953 check whether hot or burned. 4, 4953 check whether there is a high level. 5, check whether control 138 feet through 4953. ledp10 unit board | Gao Jin photovoltaic (certified) | unit board provided by Jinan Optoelectronics Technology Co., Ltd. Gao Jin. Jinan Gao Jin Optoelectronics Technology Co., Ltd. (www.gjlled.cn) 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.