Everyone here is being negative about your question but if you had set up a Roku account for the TV it's not impossible (merely improbably) that it could be traced to an IP address if the thief attempted to use the Roku in the TV. I doubt you could prove to Roku that this set was yours or that they would take the trouble to help but it's not insane to think it could be done.
What IP address? (I.T. guy here). The Roku sits behind a router getting a private IP hidden from public, this is not like a smartphone with a unique IMEI. In order to "find a laptop" software has be configured and enabled for tracing function, so it can "call home" and cannot be an after-thought like most people react after the heist.