I have recently brought a Sony DVPNS900 Multi Region DVD Player, from Richer Sounds. I used to own a Toshiba 2109, this was connected to my Sony widescreen TV, which was all connected to a Sherwood amp. When I used to turn the DVD player on, it automatically switched the television to the desired AV channel, through the scart. I have re-connected everything the way I have explained, but now when I turn the DVD player on, nothing happens to the channel selector & I have to manually pick it with either the TV remote, or the display button on the DVD player itself. Can anyone help?