> > >> It would seem that whenever I apply power by plugging in the power >> cord the circuitry that expects to see the light off at this time >> sees it already lit thus corrupting the boot process. >> >> What ever normally happens between first ON button push and the final >> Bright Light when the Boot Process starts is probably not done so >> because of error the Boot goes directly to OF. Does that make sense? > >Auto Startup RAM Test? > >Have you tried reducing the internal hardware setup to a minimal status? > >Like only have 1 stick of RAM, and no PCI cards? and sort of start >over, CUDA/PRAM Reset, rebuilding the hardware add-ons? > >Maybe then try to run AHT again? > >Thinking out loud ... > >Bill Connelly
Hi Bill; The GigE is the only operating(?) OS X machine I have and I hesitate messing with hardware when there is an obvious hardware problem evident in the ON Button. At least I can email and search the Net for a replacement as it is now. I just leave it running 24/7 now as I consider alternatives. My knowledge of the detailed boot process is sketchy at best but I can imagine a possible scenario. Now when power is applied the first event is the long "Horn" sound followed by silence and then the Boot chime and Boot into OF. I take this to mean that the Horn indicates an error is detected. Normally by the time the ON button is fully Bright the Boot process has already affirmed the Selected Boot Volume but because the ON button is always on Bright the Boot Logic is "confused". No Selected Boot Volume has been detected when it should have been Detected so an error is thrown and with nowhere else to go, it goes to OF. Apparently, logic has not indicated a lack of a Blessed volume so no blinking question mark. Any changes I make to select the Boot Volume or the Keyboard Selected alternate Boot schemes are never noticed by the Boot logic. As I say very sketchy. I am an Analog Hardware Design Type ,designed Transformers, low noise Circuit Boards Power Conversion Systems and ancient stuff like that, with a little work in programming Basic way back when.. After I get a Back-Up machine I will try your suggestions. Thank you, Ernie --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed Low End Mac's G3-5 List, 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] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/g3-5-list?hl=en Low End Mac RSS feed at feed://lowendmac.com/feed.xml -~----------~----~----~----~------~----~------~--~---
