@ymccormack, you don't have to buy a whole new TV. You can get any Roku and connect it to an HDMI input on your RokuTV.
Edit: @ymccormack , checking the list of unsupported models I don't see any RokuTVs. Check your Roku model (not the TV model number) under Settings->System->About. It's possible you had/have an unsupported Roku that isn't your TV.
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