Picked up a PB 145 and 150 yesterday. The 150 looks almost new and works perfectly (although the drive is noisy - but this is an easy fix, as the 150s' are IDEs); the 145 has some sort of screen problem, with fading in and out, messing up, serious ghosting.

Does anyone know what the likely causes of the screen problems might be? I thought I'd give the cables a good going over in the first instance, but is there anything else that is obvious (and relatively easy)?