my ALBA tv/dvd combi wont play dvds, when i press the button for the dvd player a blue box appears which says no signal check aerial or selected input is properly connected and switched on,,,,but i dont need signal for dvds so i think that its mixed up, cause also when i press the button on remote for the radio, the channels come up. so obviously they are mixed up the different settings,.....could you tell me how to fix this? thanks, michael