Listers, I just upgraded my 7200 to a 7500 with a motherboard swap etc.
Info gleaned from this list and LEM in general helped a lot. However, I did run into one problem that I don't remember seeing mentioned anywhere. The problem was with the VRAM. The 7200 comes with 1MB soldered to the motherboard. It will work with just that. The 7500 motherboard has no VRAM. You have to supply AT LEAST 2MB, using the VRAM slots provided. In my situation, I had an extra 1MB card of VRAM in my 7200, and transfered it to the 7500. The "7500" booted fine, with all the right noises, but there was no video. Zapping the PRAM would get me to a very grainy start up screen, that then reverted to a white screen with a magenta stripe that moved with the mouse, then to just the white screen. After looking at the machine specs, and the available VRAM slots, I surmised that I was 1MB short in VRAM. My local Mac repair shop verified that by adding another VRAM card, which I ended up purchasing to get the machine running. Moral: be prepared to supply 2MB of VRAM when upgrading from the 7200 to 7500 motherboard. Otherwise, all went well, and I've already installed a G3 daughter card. Bob -- 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
