RCA Roku 4K TV and 10 yr old Sony home theatre. No HDMI on HTS. Both have audio jacks. Does seem to work.

[rlena]

The cord from the HTS has 5 ends. White red black green blue. The TV has three jacks. White red yellow. I can seem to find the system on the tv and it won’t auto connect.

 

[rlena]

It doesn’t work is what I meant to say.