Jiangmen POOSLED Technology Co.,Ltd was founded in 2008, is a High-Tech manufacturer which specializing in provide LED Signs research, product development,marketing and application service.
We always use good quality LED Chips to produce our led digits signs and led message signs. Our led signs are in good viewing angle, nice color, no dead lamps, low failure rate, easy to repair. We hope we will realize normal products, flow production, international quality, best price, to make each customer will love our products and has good experience in our products.    

Question 1:Led digits sign can not work well, some led modules can not be lighting.
Answer :
A.Please check the connecting cables of drive card whether it is loose or not,and connect them again.
B.LED module is broken, please replace the new module to the led sign.
C.Please set the correct quantity of the numbers.For example: 88.88, 8.889/10 is 4 numbers.(Single sided or double sided are the same.)
D.Please check drive card's 2pin ports,and connect to other 2pin ports or change led number.