That's not how I see such working. That is, your TV only outputs the audio, be it on analog or optical outputs and it is up to those devices to connect and produce sound. If the optical unit in the turtle beach does not understand the optical data then no sound. Try an analog connection next.
I am trying to connect my turtle beach px5 headset to my samsung ps50c7000 tv and having no luck. I have plugged in through the optical output for the tv but the tv is not picking up the headsets. Any ideas?