TV1 TV2 on most dual tuners default to channel 1, its possible that what is going on is a reception issue between the tuner 2 remote and the receiver, what you can do to check this out is to move towards the room the receiver is in and press the select key. Channel 1 default setting wont cause this problem as the second remote transmitts a uhf signal to the receiver. If there is a reception problem then what you will need to do is relocate the antenna on the receiver to where the tv 2 is at, simplesimon I think has posted a diagram on how to do this.