John, I don't mean to be too obvious, but I've run into this problem before. It was solved by turning the RAM chips around. Every RAM slot I've seen has that middle notch slightly offset. The RAM just needs to be oriented to match. I hope the solution for you is this easy...
>Message-ID: <[EMAIL PROTECTED]> >Date: Thu, 13 Jun 2002 11:11:06 -0400 >From: John Ruschmeyer <[EMAIL PROTECTED]> >Subject: What kind of RAM have I got? > >Oh, the price of upgrading... > >I recently got it into my head that I wanted to replace my PowerCenter >150 with a 7500, figuring I'd move the G3 upgrade and memory over. > >The PowerCenter had 112mb of RAM- an unknown 16mb DIMM and 3 32mb DIMMS >purchased on a special from ComputerGeeks. The 16mb DIMM went over with >no difficulty; it's the 32mb ones that are the problem- they physically >won't fit the 7500 slots! > >The 3 in question were apparently made for Compaq and have Compaq part >numbers. They were sold to me as 168-pin FPM DIMMS with no warranty of >usability in a PowerMac or clone. > >In the PowerCenter, they fit in the sockets and ran for over a year with >no obvious problems. In the 7500, however, they would not seat properly >in the DIMM sockets. > >If I compare the 16mb DIMM with one of them, however, I can see why. >Holding the DIMMS side by side, I can see that one of the guide notches >(the one between the longer sections of pins) is offset from its >counterpart on the other DIMM. Interestingly, it is not completely >offset, there is a small overlap (apparently enough of one to let it sit >in the DIMM sockets of the PowerCenter). > >So I'm wondering... Are there any RAM experts out there who have seen >this before? What kind of RAM do I have, anyway? It must be close to >correct since the PowerCenter liked it (IIRC, putting the wrong memory >in a Catalyst board is pretty much fatal.), but still... > >Also, anybody know any vendors who might swap me this memory toward the >cost of some of the correct memory? > >Thanks... ><<<john>>> -------------------------------------------- Scott Gerber Design voice: (505) 466-9333 fax: (505) 466-3422 email: [EMAIL PROTECTED] address: 33 Alondra Road, Santa Fe, NM 87508 -- Power Computing is sponsored by <http://lowendmac.com/> and... 123Inkjets.com <http://lowendmac.com/ad/123inkjets.html> Support Low End Mac <http://lowendmac.com/lists/support.html> Power Computing list info: <http://lowendmac.com/power/list.html> 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]> List archive: <http://www.mail-archive.com/powercomputing%40mail.maclaunch.com/> Using a Macintosh? Get free email and more at Applelinks! <http://www.applelinks.com>
