XBHS1997's thread reminded me of my Tangerine SL iMac, which has had a most peculiar problem since new: the screen will flicker and shink upwards from the bottom sometimes, and if it goes far enough, the display will "blink out", and the machine will die. A few good slaps on the top will usually fix it. What could cause that? I've always just assumed that it was a loose connector somewhere.

Also, it is probably due for a PAV board recap, even though it worked fine last I used it (aside from the occasional manifestation of the above issue), as it sounds like it's a problem.

c