Simply put, a Roku TV is a smart TV with Roku OS baked in ... although the benefit may be easier channel hopping and input selection. The obvious answer is Roku OS, but its neutrality is ...
The Select Series comes with a Roku Voice Remote ... icons for the devices you have connected to your Roku TV, so you can switch video inputs from the same screen. Many rival operating systems ...
It could just be a simple setting, but there might be something that requires a little more troubleshooting happening ...