It should start up with a bad battery. Your power supply is most like dead or the caps on the board have failed.
On Wed, Jan 29, 2014 at 8:08 PM, David Mann <[email protected]> wrote: > Hi all, > > I started up my old G5 to do some slide scanning today but it seems to be on > the blink. At first I had some strange problems communicating with the > scanner but it came right and I got a couple of scans done. > > I left the machine to idle while I had lunch but when I came back it had > frozen up and I had to hold the power button down to get it to shut down. > > Now it won't start up :( The fans and hard drives spin up but that's it. No > chime, no signal to the display. The power LED only lights when I press the > power button. I think it was lighting up at first, but it stopped after I > did the PMU reset (see below). > > I've tried re-seating the video card and the memory, tried starting it with > the hard drives unplugged, and also with a different monitor connected to the > other port on the video card. I'm not able to get it to respond. > > I've tried resetting the PMU / SMU using these instructions, with no luck. > http://support.apple.com/kb/HT1939 > http://support.apple.com/kb/HT1436 > > I also followed the procedure to reset the PRAM but I didn't hold much hope. > http://support.apple.com/kb/HT1379 > > I'm now at the conclusion that the power supply is probably faulty. Do any > of our resident Mac experts have any further suggestions? It's a first-gen > single-processor 1.6GHz G5. I just checked and it's just a couple of weeks > over 10 years old! > > I've wondered if it would be worth replacing the battery on the motherboard > but I'm not really sure. > > I've only kept that machine around because it has no resale value and Minolta > didn't release drivers for later OS versions because they exited the scanner > business. I couldn't stand Vuescan when I last tried it so I don't really > want to go down that route. I guess the good thing about it having no resale > value is that I can replace it cheaply through the secondhand market. > > Unfortunately I was just getting started on a project to scan some really old > glass-plate slides for someone :( Might have to resort to a macro lens and a > light box. > > Cheers, > Dave > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
