On Tue, Mar 16, 2010 at 5:47 PM, Kris Tilford <[email protected]> wrote:
> I don't know for certain, but I suspect you've got a bad or dying power > supply? My early 2005 G5 had the power supply quit with only one week usage. > It was 3 weeks outside the extended warranty serial # group for the G5's > with known defective power supplies, and when I got a little noisy in a > crowded Apple Store, the Genius' supervisor said, "replace it for him, it IS > a G5" while she rolled her eyes, implying that most G5's have power supply > issues. > > I don't think you're going to solve this issue, and I'd wonder if your HDs > were killed by the power supply? > > As further evidence, on the internet I've seen multiple posts like this > (this is translated from MacBidouille): > > However the boot sequence shows this: Jun 7 11:57:17 localhost kernel [0]: >> ApplePMU:: PMU FORCED SHUTDOWN, CAUSE = -122 >> >> The response of the Store and AppleCare to long to get but they confirmed >> that the machine was defective and therefore offer an exchange ... >> > > Each person that had the power supply replaced indicted the problem was > fixed, so that seems to confirm the power supply as the cause. I'd think > your ONLY possible other cause would be bad power PRIOR to the G5, which > would be a bad UPS, bad house wiring or current, or a bad power cord? These > seem less likely to me. > > Take a look at this one: > <http://www.macintouch.com/reliability/pmg5.html> > > The extended warranty ended Jan.31, 2010, but you can check your serial # > here: > < > http://web.archive.org/web/20080722225628/http://www.apple.com/support/powermac/powersupply/repairextension/ > > > Well, possibly. My serial number begins with G8445 so it doesn't seem to be one of the recalled models. The symptoms listed are also not consistent with my issue; my G5 will power up, every time. Sometimes it just doesn't make it past the gray apple, and if I'm booting verbose I'll see that lovely "PMU forced shutdown" error. Several people I've spoken with about this like pointing to the logic board as the issue, which I suppose it could be if the PMU is spazzing out. If the error condition is genuine, then it could be the PSU. Also, the hard drives getting fried tends to point to the PSU; a little too much juice, or too many fluctuations, could likely toast a drive. I'd like to narrow it down before I go spending money on parts, since I have so little money to spend Thanks, Eric -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/g3-5-list
