B. block cell board is not bright (black) 1, a few consecutive plate transverse direction does not shine Ningxia led unit board, check the cable normal and abnormal cell plate cell plate connection is turned on; or chip 245 is normal 2 continuous longitudinal direction of a few boards does not light, check the power supply is normal in this column. LED modular development model: (1) light modular, (2) devices + PCB board integrated Liaoning led unit board, (3) light and power integration, (4) Light Anhui led unit board, power supply, cooling led unit board, optical integration, (5) connected to the port, the base standardization. Liaoning led unit board _led cell plate _ Gao Jin photoelectric provided by Jinan Optoelectronics Technology Co., Ltd. Gao Jin. Jinan Gao Jin Optoelectronics Technology Co., Ltd. (www.gjlled.cn) strong, credible, in Jinan, Shandong liquid crystal device industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Gao Jin photoelectric and you hand into the brilliant, for a better future!