JCT wrote:
> k wrote : > > > > A bad pram battery can produce such effects or a loose or bad scsi > > cable, did you add any drives ? A bad pram battery seems to be able > > to make almost any symptoms, bombing while extensions load etc. > > change the battery & then remove all the RAM and scsi - attachments > > one by one ? If one disk or player is bad it happened that it halted > > the process, Zapp the Pram will reset the monitor settings - that can > > also produce a black screen - but maybe the startup would continue > > then ? > > kenta > ============ > Do not thing that it is the PRAM. Batt volt. is OK & bad PRAM can > produce a black screen but syst. loading would continue, at least that's > what I have seen in the past... > But as has been already said, I will check RAM. > And your remark concerning a problem on the SCSI chain stopping system > loading is well taken. I will be checking this also. > Keep your ideas coming... > Really helpful people here :-) > Thanks, > JCT Thank you so much for your news story. Now back to your problem the only thing I see in my troubleshooting book here is a bad video board or a PRAM battery. I'd go with the second, I've seen very unpredictable behaviour because of a bad clock batteries, so don't discard the idea just yet. Second I'd recommend removing the harddrive completely to see if the question mark disk icon at least shows up. If it does try to boot with an OS disk to check the RAM and such things. If that just doesn't bring up the question mark icon then the motherboard may be bad. Another thing to try would be to remove ALL the RAM then try booting (I'd try this before removing the harddrive). If the mac is at least responsive she'll either give you the sad mac code accompanied with the chimes of doom (get happy if it does it is the RAM) or boot with the available board RAM (if there's any). Then again if all else fails consider the motherboard's bad. Who knows that if by fiddling around with it, it gives you the chimes with a code that'll tell you exactly what's wrong, there's nothing like the patient being able to tell you what's wrong :) Liliana Velazco -- 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:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive:<http://www.mail-archive.com/pci-powermacs%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
