Retro Viator
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Retro Viator
@retroviator.com
Classic Computer Enthusiast
Thank you!

I read through all the documentation today to make sure I was up to speed, and I was really impressed with him you keep adding awesome capabilities.
February 9, 2026 at 2:45 AM
I am passing along praise for the great work of @eric.scsi.blue and his team that continue to make the @bluescsi.com a wonder.

I’ve used almost every iteration, and the innovation, documentation, support, and overall attention to detail are superb.

My vintage Macs love their BlueSCSIs!
February 9, 2026 at 2:38 AM
My after-Christmas project was restoring a bunch Macintosh IIsi. I’ve been documenting my progress at tinkerdifferent.com/threads/mac-...

Today, the last of the issues were addressed, and I now have five fully functional Mac IIsi logic boards and two battery bombed units that provided needs parts.
January 26, 2026 at 5:11 AM
I’ve pondered how to remove pins from power connectors, and I’ve wondered what these strange tweezer were for.

Today is the day I figured out what one has to do with the other.
January 25, 2026 at 8:49 PM
Another Maxell Massacre.

A good reminder of why we GET THE BATTERIES OUT.

#retrocomputing
January 17, 2026 at 6:33 PM
Arghh… Evertime I install a significant Linux update, I lose WiFi on my 2012 MacBook Pro.

Then I have to fiddle around and remember what incantation I used last time to get it working. Each time I swear, just as I’m ready to beat my head against the wall, it magically starts working.
January 12, 2026 at 5:02 AM
Verifying my rebuilt Mac IIsi with the impressive recreation TechStep diagnostic tool.

#VintageMac
January 11, 2026 at 11:20 PM
So far, the hardest part by far is removing the old connector from the corrosion-damaged IIsi PSU.
January 10, 2026 at 5:44 PM
Going to build some new Macintosh IIsi power supplies today thanks to the design from @caymacvintage.bsky.social
January 10, 2026 at 3:53 PM
I got into the vintage/retro computer hobby in 2018. It’s amazing, exciting, and inspiring to see how much easier it is now to enjoy these old computers thanks to the work of so many in the community. The services and add-ons that flow from so many creative people is a blessing.

#retrocomputing
January 10, 2026 at 3:50 PM
Digital archeology: testing old Macintosh hard drives and copying data to my BlueSCSI, if possible.

(I should probably be using the BlueSCSI’s magical initator mode.)
January 8, 2026 at 4:32 AM
Reassembled, greased, oiled, and ready for testing.

#vintagemac
January 7, 2026 at 3:41 AM
Seven high-density Macintosh floppy drives cleaned, regeared, and ready for reassembly.

#vintagemac
January 7, 2026 at 2:17 AM
I get to see how many of these floppy drives from the horde of Macintosh IIsi can be made to work.
January 6, 2026 at 10:13 PM
I now have five working (mostly) IIsi logic boards!

I need to tackle some audio issues on two boards (one I broke), and then clean the floppies and check out the original hard drives. Then I’ll tackle the dreaded PSUs. (Though I am planning on building replacement power supplies.)
January 4, 2026 at 11:36 PM
It is a 22.5 KHz clock signal that should be around 5V, but I have a IIsi with a much lower voltage on that pin, and it’s messing with the audio.
December 30, 2025 at 6:47 AM
Do any Mac repair aficionados know what pin 16 on both Sony sound chips in the Mac IIsi connect to? The BOMARC schematics show it going off page to a page I don't have.
December 30, 2025 at 5:51 AM
A true surprise landed in my workshop this Christmas. 🎄
Plastic goodness ahead.
December 25, 2025 at 8:42 PM
The first Mac IIsi is good to go!

It had two bad connections on UE5 and three on IC UH5, both bus transceivers for the memory system. Only one small bodge under UE5 required. The rest were corroded connections.
December 24, 2025 at 11:58 PM
I have a holiday goal of getting these Mac IIsi cleaned up (if possible) and back out into the community.

Two are battery bombed, but could be useful for parts.

#retrocomputing
December 23, 2025 at 3:49 PM
I’m not sure what to make of this.

Will my 2026 be demon possessed but funny?
December 21, 2025 at 4:54 AM
Reposted by Retro Viator
Day 347 - #retrorandom - NOTHING is going to stop me being able to program this EPROM!
December 13, 2025 at 7:31 PM
Well yea… I guess that would work. 🙂
December 13, 2025 at 4:44 AM
Excellent! I will check that out.

Thank you very much.
December 13, 2025 at 4:38 AM
I ordered an open motherboard frame thinking it would be a better way to work with bare boards on my bench, but while the Baby AT screw holes line up, they are not aligned with the card slots openings.

Does anytime have a frame they recommend for legacy boards?

#retrocomputers
December 13, 2025 at 2:35 AM