Roku doesn't manufacture the TVs, so they won't be any assistance there. You would need to contact whomever manufactured your TV. See this page for contact info.
Depending on the damage, size of the TV, etc., it might be cheaper to simply replace it. Repairing consumer electronics is something that simply isn't practical for many devices. And it's difficult to even find someone that can do it any longer. The components within many devices are not designed for replacement. They are assembled using robots on assembly lines and are not built with reparability in mind.
Dan
Roku Community Streaming Expert
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