At 9:03 PM -0500 3/8/2011, Ronald Sweet wrote:
The power supply unit recently gave out on my Power Mac G4 Gigabit
Ethernet Dual 500 MHz. I have now replaced the PSU, but in doing so
I seem to have done more harm than good.
When I turn the computer on with the power button, it plays a chime
and after about ten seconds the monitor (LG Flatron 17") lights up.
A small rectangle with text flashes briefly on the screen, but is
gone before I can read it. The icon of a folder then appears, with
alternately a left-facing smiling face and a question mark on it.
After a couple of minutes this icon eventually turns into a smiling
Mac in a Mac Plus frame. The pointer also appears on the screen, and
can be moved about by means of the mouse.
I suppose this means that the Mac is looking for a startup disk, and
can't find one. Why not?
The data in the PRAM is invalid, so the bootstrap is doing the
standard device seek, checking each in turn.
Zap the PRAM, and let the machine boot. Then reselect the boot
volume using the Startup Disk system preference pane.
I suspect it's because of careless handling of the hard drives when
I was working in the case. Apple's Power Supply Replacement
Instructions (accessed from
docs.info.apple.com/article.html?artnum=75312) tell one to
disconnect the power cables from any hard drives, and to do this I
had to remove my two drives because the power cable on the lower
drive was socketed in so tightly. I suspect that I accidentally
zapped the drives with static electricity. Or can someone think of a
more probable cause?
Think horses, not zebras. Do the above first.
- Dan.
--
- Psychoceramic Emeritus; South Jersey, USA, Earth.
--
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
