Question Need help establishing 5:1 surround sound on LG TV.

Feb 26, 2020
Hey there , I'm having an issue obtaining 5:1 from my Logitech z906 speaker system from my LG 47lm6400 3D Smart TV. The TV has Optic Digital out for audio to a external source. My speaker system has 2 optic inputs but I can only receive a 2:1 from the speakers. I bought a digital to analog converter and tried running the analog input on the speakers but then there's no sound at all but the decode light is out. I'm stumped.

I made sure the TV was set to external speakers. I also made sure the correct input was selected on the speaker system. The converter is also plugged in with the light on. Any help is appreciated. Thanks
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