Damaged faulty goods

Have purchased a brand new Blaupunkt, model no: STY2265, 65" CURVED LED TV. IT SEEMS AS ITS SECOND HAND THE SCREEN NO LONGER SHOWS A PICTURE RATHER BLUE SCREEN ONLY AND OTHER COLOURS BUT PICTURE NOT VISIBLE WHILST VOICE BEING HEARD. VERY STRANGE FOR A BRAND NEW. WILL BE RETURNIG TELLY TO PICK N PAY.