I am noticing sound from the LX5500 TV tuner when the AV2 scart is selected - at medium to high volume levels. Is this normal? When playing quiet passages of music via my digital music player through this input the interference from the TV channel selected is quite noticable. Selecting AV2 when nothing is connected to the scart has the same result so it must be something internal. Is it possible to connect a music player to the DIN AV socket on the back of the TV? Perhaps this would give a better result.

Just tested with the same result!

Never noticed it before, but I had to turn volume to max to hear the TV sound very silent.

The DIN AV socket is for Data link, to connect B&O products (pre master link). This socket can´t be used for your reason.