I bought the flat screen about 3 yrs ago. On the back, it has a connection that is colored orange. (Circle connection.) Not sure if this is the sound output. Using newer Roku 2 HDMI and the tv does have the multi colored outputs. Ive hooked up a cord that is also tipped orange, and there is a feature in the menu to turn off its speakers. Lost manual, don't even know if what I'm trying is close to getting it right. Thanks, Andy