U try to power on the tv by pushing manual power button on the tv itself?Yes,tv still have no power than ur tv have power supply board problems,that the board,where the power a/c cord plug into it.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.If it the remote problems call ur cable company for the cable remote replacement.Try website like Remotes.com to buy the tv original remote for the replacement.
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