>From: [EMAIL PROTECTED] >Message-ID: <[EMAIL PROTECTED]> >Date: Fri, 29 Nov 2002 13:12:51 EST >Subject: OT: Power Supply Issue > >OK, this is the wrong forum, I know, but this and the PowerBook forum are >what I belong to, and I don't feel like signing up to any more! That said, my >old Quadra 840AV is in pieces across the room staring at me. This is because >even after replacing the PRAM battery, it will not boot. It powers on, but >there is no HD activity, no monitor activity, nothing. Someone suggested it >might be the power supply, so I ripped the whole thing apart to see and get >the model #. I've done that, but I can't seem to locate a replacement >anywhere. 614-0012 is the model # of the power supply. What I really want to >know, is it likely that the power supply is the culprit, or is it possibly >something else (RAM, motherboard, etc.). I have 13 other Macs, and this is >the only one that is currently out of action, something I really want to >rectify. And before someone gives my a lecture about posting here, I have so >many different Macs that belonging to a bunch of forums would be ridiculous. >I DO have several Power Macs, so I'm just looking for some help from my >fellow Mac users! TIA, Heather
Does it chime? The very first thing we need to know (after whehter it powers up) is whether it chimes. Knowing where in teh start-up process it fails (for any Mac, PCI or earlier or later) is one of the most important pieces of diagnostic information. The process steps go something like: power on chimes gray screen disk icon/flashing question mark smiling mac OS splash screen loading extensions etc. So where in that list is your machine failing. I'd guess after power on and before chimes. That's going to be either a power supply or a mother board problem most likely. Might be RAM. I think if you pull the motherboard, you can plug a IIci power supply into the MB power supply connector. My reasoning is thus. The IIci power supply uses the same connector/signal arrangement as the IIcx, IIvi, IIvx, Q700, C650, Q650 and 7100. The Q650 motherboard is the same as the Q800 and the Q800 will go in the same case as the Q840, I think. So the Q840 should be able to use a IIcx, IIci, IIvi, IIvx, Q700, C650, Q650, 7100 and Q800 power supply, if you pull the MB out of the case so that you can get the two connectors together. One or more of those links may be mistaken, so I could be wrong... Jeff Walther -- 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
