my dvd player broke and have bought a new one....have plugged it all in...........using a scart lead direct to the tv there is also a sky box plugged in by coaxail from the sky box direct to the tv......this is how the old DVD player was set up

when i switch on the new DVD now the name of the dvd player scrolls from left to right on the screen and u can still hear the sound from the bbc tv channel.......i put a dvd in and theres no sound on the dvd just bbc on the tv...............i cant understand why as it is wired up the same way as the old dvd player....any ideas