There isn't any reason that it shouldn't work with that TV. The remote not controlling the Express wouldn't have anything to do with the TV.
I'm confused - were you able to set it up on another TV? What happened when you moved it back to the Sony after it was set up?
Roku Community Streaming Expert
Help others find this answer and click "Accept as Solution."
If you appreciate my answer, maybe give me a Kudo.
I am not a Roku employee.