FRIENDS I HAVE A TV UTECH MODEL UTV21US12 TURN ON AND SEE THE PROGRAMMING BUT ON THE TOP OF THE SCREEN YOU GET SOME WHITE STRIPES LIKE EIGHT OR SIX STRIPES CHANGE FILTERS THAT ARE CLOSE TO THE VERTICAL AND THE STRIPES ARE NOT BEEN SEALED THAT THIS PRODUCTION IS FAILING I DIDN'T CHANGE IT BECAUSE I DON'T HAVE THAT MODEL IT IS 78040 I HAVE ONE BUT IT IS 78045 I DON'T KNOW IF IT SERVES THAT TO DISCOVER THAT THAT PART WITHOUT JUST WAIT FOR YOUR VALUABLE HELP BEFORE THANK YOU !!!