Thanks to all who responded. To continue in the hopes of gleaning more wisdom, here are some clarifications: 1) the computer used a standard VGA-based 17" monitor, though I did try a spare 15" ADC Apple display to see if it was a port-specific problem on the video card (no go). 2) As mentioned, I cannot reset the PRAM or NVRAM, as the boot sequence will not go far enough to query the keyboard or other peripherals (like the optical drive). 3) I did swap out the HD and put back in the known-good Apple OEM HD, again no luck, but I can re-attempt with a different HD.
My sad suspicion is the motherboard (first) or processor board, but want to exhaust all options before I begin parting out the good components. Many thanks again, Dana On Sunday, September 16, 2012 7:46:07 PM UTC-4, DLC wrote: > > Greetings all, > I'd like to seek advice for those who've tread down the path I need to > take. A while back I donated a G5 tower (June 2004 model, 1.8GHz DP w/ PCI > slots) to a small private school. Recently I was told by the teacher that > it just stopped working, so I took it in and ascertained that the video > card was the most likely culprit (issue= boot up chime, then > nothing-nothing fires up, except the fans going full tilt if you wait a > couple minutes, then you need to do a hard shutdown). Apparently not, as a > replacement card (known good) and a 2nd used one I had failed to remedy the > situation. Re-seating RAM, pulling 3rd party cards, new PRAM battery, > returning unit to OEM status, and resetting the board all proved fruitless. > > So, I'm inquiring from those in the know what the next step is. Alas, all > keystroke related remedies (resetting PRAM, NVRAM, single user and verbose > mode, C key for optical, etc.) are not an option - the boot-up mode does > not get far enough in to query the peripherals or seek an OS. > I fear it may be bad processor or logic board, but maybe there's a way to > verify or get around? > > Many thanks for any input. > Regards, > Dana > -- 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
