I have never had this happen before but a static discharge fried my Roku Ultra remote. Walked across the carpeted room and picked up the remote which was sitting on top of a DVD player, received a nasty static shock and the remote no longer functioned. Did the usual stuff, new batteries, etc. but the remote is dead. Everything functioned fine up to this point.
Please contact your TV's manufacturer directly to report this issue and request additional support. Each Roku TV manufacturer provides direct support and warranty services for their products running the Roku OS.