Pardon me, I have forgotten all the details: Take out all the PCI cards. Put in just one or maybe two if you have to, RAM chips (Try each in turn), forget about the HD, disconnect it or use another HD which you know boots another machine ok, use a CD or floppy to start (they need a valid System Folder on it, don't try anything fancy like more than 9). The speaker works? The monitor is known to be good? Work thoroughly thru one machine at a time, eg. if you want to try a processor, swap the processor (using the temporary "spare" in the machine you are not testing)... Take out the video Ram and use the spares. Big drag and very time consuming changing one factor at a time...
Maybe you have tried all these things? David Elmo > Subject: Power but no boot from a Power Mac 8500 > From: Joe Braddy <[EMAIL PROTECTED]> > Recently, I've been asked to repair two Power Mac 8500s that power up but > fail to boot. On each machine, there's no boot sound, there's no launch from > the hard drive (it spins briefly and then stops), and the monitor remains > black. > > I've replaced the motherboard batteries (3.6-volt lithium) with new ones. > I've also swapped out power supplies; reseated all the memory modules, > processor cards and PCI cards; checked all of the cables; and reset the CUDA > switch. And still there's nothing. > > Does anyone out there have any clues? > > Joe -- 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
