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My O.G. TechStep will not talk to one of my IIcis. I "read somewhere" that this could be due to a bad resistor pack. It will also not talk to my SE/30. I snooped the serial connection and determined that the computer is not responding to the *V command despite supporting everything else.

I'm wondering if it's misaligned, yeah. It looks like it's seated just fractionally further back than mine is. Unfortunately this would be very hard to figure out since I have no idea exactly what properly aligned means for a Cat drive. This won't help you sell it, but since it's possible to...

Are any of the check lights on when it runs?

No, they don't need to be prepared in any special way - the Cat will reformat the disk if necessary. It sounds like your drive is indeed busted. :( That said, I'm having difficulty visualizing how the drive head looks. Can you post a picture? When you say it doesn't click in place, what are you...

The Github site says that build is for AIX 4.3, so I'm not surprised it doesn't work. Making an ANS DOOM has been on my to-do list for awhile and maybe I should dust that off (it would also work with my ThinkPad 860 and my "800" if I ever get it booting from SCSI again). I should note that...

The ROM is indeed already mapped. The ANS 500 ROM can be trivially dumped with h# ffc00000 h# 00400000 and then obviously processing the output. I did this at 19200 but I don't see why 57600 wouldn't work. quake.sw.wimp (part of the tar) should not require Ultimedia. However, it probably won't...

The disc should have a ISO 9660 partition, so if you can't see that with it mounted (any system can read that part), then it may be a bad image. You might find the LV expansion process easier with smit. Are you actually running an AIX DOOM build on it? Quake should have a non-Ultimedia build...

I'm going to have to dig my A3 out of storage and have a look at it.

I thought the issue on the subwoofer was more that the contacts to the umbilical cable were sometimes bad. I have a TAM PSU with the buzz that I need to do work on, though I also have one that has very clean sound.

"Lightly used" indeed!

The video ROM might help, since you don't have anything recognizeable as characters in those pictures (the A3 should come up in text mode). Mine had properly formed characters; the screen was just garbage.

I don't have much insight here for you but my Apple III did something similar and I put it in storage to ponder how to fix it. I don't remember the caps looking as bad as that but I'll check them again next time I'm in that unit.

All iMac G4 systems should be able to boot OS 9, either officially or (for those units that Apple didn't support) using the unofficial booters at https://www.macos9lives.com/downloads .

What does it say in Open Firmware when you try? You didn't whack the OS 9 drivers in the process, I hope? The Tiger installer may have installed a different driver.

Great list. Pretty sure the Power Mac 7600 PSU is interchangeable with the 72/73/7500 also, though I'd have to dig mine out of storage to check.

Well, I'll just say for one: it's not that I'm uninterested, it's that I don't know how my Mystic Colour Classic would react.

The IIsi was the first Mac I owned personally, so I have a soft spot for them. Glad to see this one lives.

I finally got around to refurbishing my troublesome IIci with a MacIvory III, the last and most powerful of the NuBus Lisp coprocessor boards running Genera, and a direct descendant of the MIT Lisp machines. This machine all told has cost me over $6000, first the $4500 purchase price - which...

I'd start with forum.vcfed.org or you could ask on the cctalk list. There are many PS/2 specialists in both places.

I'm sure it will be epic once you get the LCD back in the right position ;) How much RAM does it say is installed? That said, it seems like the hard disk is shot or erased. While you can run NetBSD on it, it really ought to run the original AIX. Plus, you can do tricks like...