Recent content by skeptechsguide

Oh dear, that is a conundrum, and I do deeply respect your foundational instinct to "do no harm". I come from a line of archivists and librarians so it's something I deeply understand. My thought on this is though: If the work you are doing is fed back in to the community and builds a love and...

My brilliant friend @Andy discovered a satisfyingly technical and ancient answer to my questions regarding PAL SIMMs, and the background, as outlined in the PDF attached! Then of course I found THE DEFINITIVE 68kMLA thread on the subject. Just looping it in here for reference. Of course it was...

On another topic, despite extensive research I'm having a hard time nailing down specifics on the RAM capabilities of the STOCK Macintosh II. I know about the 24/32bit addressing. I know about the HMMU, but beyond that things get murky. I found THIS THREAD that tries to take a whack at it, but...

Well, the audio still isn't working. One thing I didn't do was pull the socketed QFPs (like the sound chip) and check under the socket or clean the contacts... There's something afoot, but I am feeling quite satisfied overall. This is the first time I've undertaken this much rework on a single...

Hello All, So, I figured I'd post an update. I ordered and received my capacitor repair kits and pulled the board and gave it a good look-over. I dusted it, cleaned it with iso and pulled all the bad SMD electrolytics via the twisting method. It was very quick and smooth and incurred no...

I knoooooow... I got totally screwed by having a lucky snag 😋 You're all starting to turn me to your way of thinking...I just hope all my cap rework does the job and they both give me a chime. And no, I haven't tried powering them up. Not gonna be impatient (he grumbles to himself under his breath)

As per @Unknown_K 's request here's the IIfx card set... There's something fishy. One of these cards doesn't fit in the Macintosh II... Now I'm wondering. I have a PowerMac 8100/80 that I'm pretty sure I got from the same client. It might be that they upgraded in to that when they got the "Janus...

These are all great thoughts. My laser cutter is only 500x300mm, so I might have to make some phone calls. Does anyone have any drawings for Macintosh II dimensions or will this be from scratch... 🤔 I've attached a board shot of the "new" Macintosh II along with pictures from the eBay listing...

Oh ya. You better believe it, but soon it'll be:

It is a Rev. B

Hi Doc, does your Tobi card have the memory expansion? If so then it can do 640x480 67Hz @256 Colors. That's a standard sync that most modern monitors will do (VGA clock + 6.66KHz). That "emulates" the Macintosh 13" "High Resolution Monitor" the DIP settings on different 15 pin Mac to VGA...

Hello Everyone, I've been lurking a bit. Your perspectives are greatly respected and appreciated. So: I've been a vintage collector (read, borderline hoarder with a vague curatorial philosophy) for years. I've been lucky enough to come across lots of great finds and not have to put too big...