[Duo2400] Duo 230 Screen Problems

[Impmon]

> I'm using a Duo 230 and the other day when I turned it on, the screen was
> black, but you could hear it starting up. I've tried resetting the PRAM
and
> changing the contrast/brightness on the screen, but nothing change :(
> Any idea's?

Loose video cable?  Remove the keyboard and check/reseat the video cable.
If that doesn't work, you may have a blown backlight bulb.