Heok Hee Ng wrote: > If I get a completely blank screen upon startup, does this mean that my > SCSI bus is dead? I have been experiencing a number of problems with my > 7500 (with a Sonnet G3 card) lately, the most annoying one being that > the system would freeze if I tried to open any other application other > than Netscape Communicator. I thought that the freeze might be due to a > corrupt system, so I tried reinstalling OS 9.0, but the system froze > again midway through the install. Now, when I press the startup button, > I don't get a startup bong, and the screen remains dark. The drives > (both CD and HD) spin up briefly, and then nothing happens except for > the whirring of the fan on the power supply. I tried switching from the > internal SCSI bus to the external bus, but got exactly the same results. > > I suspect a dead SCSI bus. Can anyone confirm this?
Sounds much more like a dead mobo or dead processor card to me. The 'No Bong' is a dead giveaway. If the SCSI bus died, you would get a startup chime of some sort, whether it's a 'bong' or 'car crash' , and at least get a grey screen with a mouse pointer, and perhaps a flashing question mark disk. You can try a deep pram reset: remove power, remove the PRAM battery, and let it sit for 30+ minutes, then press the CUDA switch a couple of times, replace the PRAM battery (may as well check it out while it's out to make sure it isn't a dead PRAM battery) plug it in and start it up. If you have the old processor from this system, try putting that back in. (if you don't, it's a good idea to pick one up as a diagnostic spare; non-G3 or G4 ones are cheap...you could probably get an original 120 for next to nothing.) -- Bruce Johnson University of Arizona College of Pharmacy Information Technology Group Institutions do not have opinions, merely customs -- PCI-PowerMacs is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- Sonnet & PowerLogix Upgrades - start at $169 | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> PCI-PowerMacs list info: <http://lowendmac.com/lists/pci-powermacs.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:pci-powermacs@;mail.maclaunch.com> To unsubscribe, email: <mailto:pci-powermacs-off@;mail.maclaunch.com> For digest mode, email: <mailto:pci-powermacs-digest@;mail.maclaunch.com> Subscription questions: <mailto:listmom@;lowendmac.com> Archive:<http://www.mail-archive.com/pci-powermacs%40mail.maclaunch.com/> --------------------------------------------------------------- >The Think Different Store http://www.ThinkDifferentStore.com ---------------------------------------------------------------
