I was able to get my DA G4 operational again by replacing the power supply.
I have noticed something odd. The machine has all its memory slots filled with 512 sticks. I am 99% sure they are the original sticks from the machine from before the power outage. I tested them in another machine and they all tested out OK. Now with these sticks back in the DA About This Mac is showing only one GB of memory when there are 1.5 GB installed and before the power outage it showed 1.5 GB. About this Mac shows each slot as: DIMM0/J21: Size: Empty Type: Empty Speed: Empty Status: Empty DIMM1/J22: Size: 512 MB Type: SDRAM Speed: PC100-322S Status: OK DIMM2/J23: Size: 512 MB Type: SDRAM Speed: PC133-333 Status: OK DIMM3/J24: Size: Empty Type: Empty Speed: Empty Status: Empty The machine only has three slots and they are all filled. Part of the problem is I never checked this far into this before this problem so I can't say for certain what has changed other than the machine always showed 1.5GB. I thought the 133Mhz machine couldn't use, if I am reading this correctly, PC-100 ram. Something similar to this happened on the Dual Processor G4 I used for a couple of days before it died. It had 2GB of ram. When I checked it it showed only 1.5 GB. As I used it I would occasionally come across a "Memory Failure" statement or it would say memory failed. It wasn't a system error. I can't say what I was doing when I came across this statement. Anyway, a day or two later the Dual Processor G4 quit working. The power light would come on but It wouldn't boot. This machine had a broken USB port that some idiot broke at work. I am thinking maybe this is what killed the Dual Processor. I can't say for sure, but I am guessing that the motherboard in the Dual Processor is dead. I tried all this ram in a third machine and It liked all of it. It handled the 2GB from the Dual Processor and the 1.5GB from the DA. I thought I was very careful to keep these sticks straight and together, but it is possible I could have mixed them. I don't think so. What could be going on here? I am I looking at a possible motherboard failure in the DA? It doesn't look like it would be very hard to change. I thought about getting another motherboard for the Dual Processor, but even the used ones a expensive. Mark Murphy -- 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 g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
