I have same problem. I have a new LG tv with HDMI ports and digital optical and video in (yellow) connection. I couldn't get picture from boe only audio. SoI bought a blue ray DVR to watch videos only to have picture and no sound. I have digital optical from tv plugged into Bose, ordered a 4 prong cable CA-C3AV plugged speaker end into tv and hooked up yellow ,red , and white to video out on Bose. Solved problem. Hope this helps some to be able to enjoy the quality of Bose!