The other day I turned on my 14" iBook G3 800 and after starting up normally the screen flickered wildly for a few seconds and then froze on the desktop screen but nothing would work. I panicked because i'm a designer and it had been a while since I backed up, but managed to get it to come back on and work long enough to burn a couple of cds (thank god), and then it happened again. Now when I turn it on it sort of works for a bit (periods vary between 30 secs and 30 minutes) and then it does the flickery thing and freezes. Sometimes the image stays frozen on the screen and sometimes it goes black. I can make it come back if I slap it on the left hand surface left of the trackpad, suggesting it's some sort of loose connection, however once it's happened the system is frozen dead and I have to restart anyway. My question is- does anyone think it might be possible to fix this without replacing the logic board (I'm not afraid of taking the book apart, but would like to know what my chances of success are before I do it...). If it does require a new board, does anyone know a good place in the UK to get replacement parts that don't cost ridiculous amounts of money? Any help greatly appreciated!