Outdoor LED display installed will use cost? 1. Screen fee: that display quotes ××× yuan / square meter slim led module, which customers choose models, the material is not the same as Beijing led module, the price is also different. (Fees include LED chips, LED lamp beads, cell boards, IC driver chips, power modules, plastic mask and cabinet led module, as well as the internal display all standard cable, power cable.) Shandong LED display unit board screen the whole screen failure: A. entire screen is not bright (black) 1, detect power supply is powered on. 2, testing the communication cable is plugged in, with or without wrong. (Synchronous screen) 3, synchronous screen detection sending card and receiving card communication whether the flashing green light. 4, the computer monitor is protected or display area is black or pure blue. (Synchronous screen) Slim led module, led modules, Gao Jin photoelectric provided by Jinan Optoelectronics Technology Co., Ltd. Gao Jin. Jinan Gao Jin Optoelectronics Technology Co., Ltd. (www.zhkyled.com) 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!