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They say Y, replace with Y2

Book says replace with at least 35V rating. The ones you picked will do the job

CR1 is in the flyback circuit, so mains voltage doesn't matter. The book says 3A diodes were originally used, they should be replaced with at least 5A rated diodes.

Yes. Actually the diodes aren't mentioned in "The Dead Mac Scrolls" but rather the earlier "Macintosh Repair & Upgrade Secrets" https://archive.org/details/mac_Macintosh_Repair_Upgrade_Secrets_1990/page/n145/mode/2up

Blackened leg on diode looks bad. See "Dead Mac Scrolls" about replacing it

PCBs have arrived. I made a few small changes since the last time I showed the design. JLCPCB made five of these for $2.07 and shipped to USA for $9.19

Then you've still got cold solder joints or a loose connection somewhere. Look again...

Like others have said earlier what's the point of such a niche network for one specific brand of old computer? I'm not saying you shouldn't go for it but I wouldn't bother. At least you'll learn something

I don't understand what would make this different from any other indie WWW construct. You point to tailspins caused by a lack of "content" but don't elaborate what makes your proposal stand apart and where you're gonna get free content. If I really want "an ad-and-AI-free, curated, small" social...

Oh so hard... had to use a clanker.,.,,

why can't this be for vintage PCs too

The term "walled-garden" was an immediate turn off for me I think the only useful sect of this scheme would be multiplayer games, you could do everything else on a Unixen box with the Macintosh just acting as a terminal.

I had basically the same problem with the panel in my PowerBook 160. Hope you figure it out

Never use glue to attach components to the PCB. Your joints look wrinkly, next time actually use flux and more heat on the iron. A good solder joint is smooth and shiny.

What does the grey rectangle symbolize? A label? The labels are on the front!

The moment you abstain from an Apple is the moment you realize the Macintosh system software is actually a giant pile of sh*t

Can it mine dogecoin

WTF?

I had no problems imaging my EDUCOMP diskettes with Disk Copy.

If you were on Linux you could mount the plain old HFS disk images natively and list the files. In my opinion I would publish the magnetic flux copies of the diskettes along with Disk Copy images so everyone has everything they would ever need