5.FAQ Q1: No output Al: If thees Is color banners display, please check If green LED lights, if not, please check HDMI source and HDMI cable. If there Isn't color banner, please sack Ypres display and Ypres cable. Q2: There is a zigzag pattern on output picture A2: please adjust output resolution Q3: Wuhan connect 3D sources to the converter box, color banners display, and ‘NO SIGNAL’ shows, or sometimes, half-and-half replete displays. A3: This converter box doesn't handle 3D source.