I have an old Memorex Soundbar with audio input for DVD or TV with red and white coaxial cables. It also has video out with a yellow coaxial cable or the S-Video. I would like to hook this up to and old DVD/VCR combo and then to my smart TV. Is this possible? Please help. I also have and old WII I would like to hook up for my Grandson if possible. Thank you.
I find it odd your Soundbar has a video out, but regardless.
If you can, I'd hook up the DVD/VCR combo to an input on the TV. Most likely it will be "component input".
To get the sound to the soundbar you will need an analog output on the TV. I can't tell you what that is being you didn't mention a model for the Smart TV.....but I can suggest the headphone jack.
It is 1/8" stereo....so you need a 1/8" stereo plug to two RCA plugs that will connect to the soundbar.