I've just purchased some Sephia S6 bluetooth headphones and I can't get my Bravia KD-49XE90 TV to pair with them. The TV can't find the headphones when searching for available devices (bluetooth is switched on). Other devices pair and connect to the TV okay, including some MPOW in-ear phones. The Sephia headphones will pair and connect to my phone and laptop okay. Can anyone help please?