Nav Display Console not turning on???

[50L1]

HELP My navigation console and everything else in it such as CD player, Telephone, Trip Computer etc... is not switching on, even though I have pressed the power on knob repeatedley. My screen is black othing to show yet the eject button does its business and when I turn on the ignition it lights up in a dark grey colour, then back to black.

[50L1]

Sorted!!! bloody fuse was blown ven though the motorised eject thing was working. Phew.....