Skips Dvd Mode, Stays In Md Mode

[kmammas]

Recently my DVD player stopped playing. When pressing the mode button, it doesn't display dvd mode at all. It keeps going to md mode and plays no music. The DVD between the front seats ejects properly. All the CDs are installed properly. When put back into the player, I can hear the player reading the CDs. But it continues to skip dvd mode but displays md mode, playing no sound. Not quite sure what is going on. Does anyone know how to correct this problem? Thanks.