Purchased a Hisense TV Model Number: H40M3300 on 01/01/2017. 11 months later the TV will not change channels and volume does not work. Richer sounds put me straight through to Hisense repair company who told me the mainboard needed changing. First reported the fault on the 5th December and 3 and half weeks later I still have a broken TV. The repair company had to order in the part from somewhere. No one nows how long it will take. Christmas with a broken TV. Richer sounds say they can't do anything more...TV only 11 months old. Used to always use Richer Sounds...but no more.