Right anyone got any ideas.

Here's the problem.

There's power to the headunit, but no lights on on the display.

As soon as you turn the keys, the face drops down like it does when you want to put a CD in but none of the button's work, i.e eject, as there is a CD in there.

As soon as you turn the keys off, the headunit roll's over to security mode, so there's defo power there, but thats it.

any ideas what could be wrong?

Common fault?

Just happened, no warning i.e been tempremental.

Cheers