Most of my computers have not been powered up since the mid 1990s when I got them. Some have worked fine like my apple //e models whereas all the power supplies have failed in my Mac II boxes. I have some even older stuff that I never powered on including …

Anyone have circuit diagrams of the Apple Mac II monitor M1296 ? I have two to fix and have been scouring the ether looking for them with no success. Cheers. …

I just finished swapping the orginal PSU fan for a Noctua (80mm, 12V DC, ULN) on my original and non-upgraded Macintosh II. When I did a smoke test the computer was dead as a dodo. The batteries read 2.48V (upper) and 0.87V (lower). I bought this computer …

Here’s a video - a minute or so in you’ll see a number of Mac Classics and then a number of S-100 machines (including the Vector 1 as seen on John Monahan’s S100 site)VCF West 2023 - Retrofest! Also in there, a Netronics ELF II, Apple I …

The posts here are very helpful, thank you for all the topics over the past few years. In the process of restoring my //si from 1990. My main question is: What is the minimum needed to test the motherboard? The objective is to get an indication that refur …

As promised, I'm starting a thread for my tinkering with upgrading the internals of the well-known and somewhat hated power supplies for the Mac II/Quadra 650/700 desktops. Like many of you, I have a few of these that are dead as a doornail. For the rebuil …