G4 Quicksilver 2001 dual 800 MHz power-up problem
August 11, 2016 I recently replaced the CPU with a dual 1G card, original to a 2002 G4. I have had no problem with this card for several months, although I use this computer rarely, and Only fire it up occasionally. It is connected to the power mains through a panel-mounted Furman voltage protection device. There are several other upgrades, OWC firewire 800 and USB 2.0 PCI cards, and the fastest graphics card I could get back in the day. I’ve used this computer for 15 years. Failed partition map in external 1T LaCie Rugged drive may have caused this powering up problem, which I have been able to solve by the usual tricks. I may have had another external drive attached, and I may also have been networked to another local computer via Ethernet! When the computer failed and shut down, here’s the last thing I saw on the screen: it was filled with numbers, on a black background. From previous unhappy experience, this may mean that the CPU daughter card has failed. But I don’t know. Every time I took out a PCI card, or tried starting with different peripherals connected/disconnected, I removed the battery for 15 minutes and/ or reset the CUDA button. Every time I tried to power up the following sequence occurred: 1) As I held down the power button it lit up for a long second, went dark and then flashed for a fraction of a second. 2) It emitted a ‘beep’ sound that I have not heard before. 3) The hard drive was spinning-up and the fans were on. 4) After several seconds it powered itself down. 5) Pressing the power button now yielded no activity at all. 6) There was a ‘ticking’ sound, coming from the area of the power supply, which stopped when I disconnected the power cable. If I opened the side and looked at the mother board while it was attempting to start, the Red LED was solid. Then it was blinking after failure to power-up. After resetting the CUDA button, taking out the battery, pulling every PCI card and all but one memory card, trying to start while holding Command+Control+P+R keys down, and replacing the CPU, I am still at a quandary. Today, I tried swapping in the original dual 800 CPU card. I had the video monitor plugged in. Also the keyboard and the Ethernet cable were attached. When I held down the start button, the G4 made it’s usuall happu ‘bong’ sound and the power button lit up steady. I turned on the video monitor and was pleased to see the grey screen with the Apple icon, the usual start-up display. However, after a few more seconds the G4 powered itself off. I would guess that it had been on for maybe 10 seconds before shutting down. I have the original graphics card somewhere. I will try swapping that with the after-market card that’s in there now when I find it. Otherwise, I remain flummoxed, and appeal to any advanced G4 users who have helpful suggestions which I have not already tried. Thank you, Stephen Mason -- -- 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 --- You received this message because you are subscribed to the Google Groups "G-Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
