I picked up a non-working 2002 Quicksilver G4 for fairly cheap. It has basically the same symptoms as described in alk's AF thread, and it pretty much seems to be a bad power supply. It's interesting. When I hook up a CD drive to the power connectors on the end of the line it doesn't power on, but when I hook it up to the connector on the middle of the line, it does. The harddrives, on the other hand, sometimes do, sometimes don't. I haven't gotten any video out from the machine, although the fans run and the motherboard's red led comes on. No heat comes off the processor. I tried it's Nvidia 64mb AGP video card in my wife's Digital Audio G4 and the machine boots but the apple and sprocket are light yellow-green, and the desktop comes up light yellow-green also, and then there's a kernel panic. One of the SCSI harddrives I have in her DA also starts failing when the Nvidia card is in the machine. I tried the Rage 128 card from the DA in the QS but still no boot or video out (I also tried a Rage 128 PCI card and nothing). I put the Rage back in the DA and everything's fine there again, thank goodness. So I guess the Nvidia card is bad too (shucks). The QS came with three sticks of PC100 (stupid is as stupid does), so I tried some PC133 that I know is good but still no boot.
QS PSU's are still very pricey (I can't test the QS with the DA PSU, right?), so I'm wondering how difficult it would be to put the dual 1Ghz processor in the Digital Audio for the time being. Has anyone else tried it? Both systems are 133mhz and it sounds like it will work. Of course, I'm also now worried that the dual processor may be screwed up and if there would be any danger to the DA if I did. But if anyone has any advice or suggestions, I'd appreciate it? thanks in advance