@dosdude1Sure!
interesting. I may have the SGRAM chips on some old ATI board for PC, I could piggyback them on- would that possibly damage the board?I always grumble about these machines having quite a capable graphics chip, hobbled by only 2MB of VRAM... Glad to see they didn't ship with the 1MB option they considered! It does flag the additional CAS and RAS lines on pins 28 and 206 of the ATI chip though if anyone feels like stacking SGRAM to get 4MB and more QD3D games running.
It would be delicate work, you'd be picking up pins from the ATI chip and being SMD, piggybacking would be... tricky.interesting. I may have the SGRAM chips on some old ATI board for PC, I could piggyback them on- would that possibly damage the board?
Unfortunately boardviews really are a modern mac thing only. There's 9600 schematics attached earlier in this thread and that would be of some use, but it'd still be a lot of wandering around in the dark to use that to fix corrosion damage on an 8500.I'm trying to track down schematics/boardviews for an 8500.
Unfortunately boardviews really are a modern mac thing only. There's 9600 schematics attached earlier in this thread and that would be of some use, but it'd still be a lot of wandering around in the dark to use that to fix corrosion damage on an 8500.
Can you post some photos in a new thread would be easier to assistIt's going to be very challenging. I'm trying to source another 8500 board now - which may or may not help. I'd rather not let this other board just go in the scrapper if I can help it. The corrosion is limited a small section, just very deep into those multi-layer vias.
Thanks for your assistance.
Can you post some photos in a new thread would be easier to assist
yeah go ahead upload some photos worst case I can send you a spare boardI'd be happy to - but it depends if anyone finds it interesting. I'm just some random Aussie with a love of old macs and restoring retro gear.
Never! Most junk boards are worth keeping around, just in case you get something with a mangled ASIC or some other missing component down the road.I'd rather not let this other board just go in the scrapper if I can help it.
It would more go on my 'scrap parts' storage bin rather than an actual rubbish bin. There's always value in this stuff.Never! Most junk boards are worth keeping around, just in case you get something with a mangled ASIC or some other missing component down the road.