I'm sorry to say that this TV model doesn't support audio output. I apologize for the inconvenience.
I am trying to connect a Samsung Crystal Surround HW-E450 to a Samsung UN40D5003BF LED TV. The TV has HDMI in, HDMI/DVI in and component/AV in(right&left audio, yellow video, Pr and Pe in). I tried the audio cable supplied with the surround speaker and I tried an HDMI cable but am unable to get any sound. I checked the connections, the volume is turned up, and the correct input mode was selected. I found posts suggesting that the internal TV speakers must be turned off but can't find how - I even tried the users' manual!