Hello there. I haven't used a Mac since University (LC-II/System 7) but have recently saved and old PB G5 [edit: I mean G4] 15" 1.5 GHz model from being thrown out, and i thought I'd see what I could do with it, and generally play. Had to buy a fake-Apple PSU, fine. But seemed dead. No response at all from power button. After a complete disassembly (mainly for fun) I found that it won't do anything unless I disconnect the Pram board (that sits on the DVD drive). *If* I do this *And* I unplug the PSU for a second since the last shutdown, it will start reliably. Has anyone seen this behaviour? The Pram battery seems to hold charge (at least it's reporting about 4V). I tried some Ctl-Option-P-R combinations I read about, no change. (BTW, all of the above is with the main battery removed) Any advice welcome. Thanks!