Roku TV remote - NO. Roku TVs use a completely different set of command signals than Roku devices do.
GE Universal remote - MAYBE. The Roku 3 must be located in the open where its front is visible from the remote's location. And the remote must list the Roku as one of the devices it can control. If you no longer have the documentation for the remote you can probably find it online if you search for the remote's model number.
Roku Community Streaming Expert
I am not a Roku employee, only a user like you. Please, no support questions via private message -- post them publicly to the Community where others may benefit as well.
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Ultra 4800 | Streaming Stick 4K+ 3821 | TCL Roku TV 43S245/C107X
