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Thank you for posting your question on Just Answer! I will be happy to help you with this problem.
This is a main board problem, If the controller board buttons are not sticky and remote buttons are not sticky.
These are some part stores, CALL THEM IF POSSIBLE always check with manufacturer , And you may need the name of the part and its part number off the part itself
The places that are in home repair, You should locate by going to your yellow pages .com enter tv repair along with your zip, and normally repair is around 250.00 does depend on were you live friend.
Let me know if you need me for anything else.