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I haven't read the entire thread, but it was most likely 40 volume developer, which is 12% H2O2. That's the stuff I use and see most other people use, at least those that live somewhere where it's available.

Ok, I've been saving these two bombed SE/30's for last. I don't know if that was saving the best for last, or just putting off the most potential frustration :) Hopefully I can get at least one working machine out of them. Anyways, here they are: The analog boards, PSUs, and CRTs all...

Completely silent and stylish Macintosh cooling 🙃:

Finally got the ethernet sorted in my 040 IIci so it could talk to its twin 😁

The Plus was kind of like the Color Classic in that it already worked somewhat, but was just really rusty and dirty. It would boot to the ? and off a FloppyEMU, but not from SCSI or a real floppy. It got the full recap treatment...analog board, logic board, and floppy. The floppy was also...

I guess my project will be to keep working through this pile of compacts I got from another forum member back in December...just finished up the CC, so moving on the Plus next! https://tinkerdifferent.com/threads/tinkering-with-compacts-all-winter.3157/

Connected from my newly-working Color Classic using BlueSCSI DaynaPort emulation :)

I'm running a Turbo040, 128MB LB RAM, 128MB Stage II Rocket, RasterOps Paintboard Prism GT, and Farallon NIC in my IIci with the original Astec PSU (recapped), and everything is stable...no signs of a warp core breach. So, while I can't answer your video card compatibility question, I have...

I replaced the FPU on the ThunderCachePro and stability improved, but still had the occasional nondeterministic crash. Then I found the reason that MicroMac puts those fancy gold stickers on all of their CPUs and FPUs: That's a 33Mhz part on a 50Mhz accelerator 😬. I swapped in a real 50Mhz...

It took some tinkering and running in circles, but I finally got this 50Mhz ThunderCachePro working in the Color Classic: When it didn't work on the first try, I moved it to my LCII so I would have at least some access to the card while it was running. Just like in the CC, it was chiming...

I don't have any experience troubleshooting or repairing mine so far (knock on wood), but I can confirm that it supports 128MB of RAM: Is there any visible damage or corrosion on either card? I did have another accelerator where leaky caps had eaten a couple of the RAM's data lines, but I...

Ya, I read about that in your other thread. I'm sure you'll get it going again :) I'm really liking the Color Classic so far. When I got it, I briefly thought about swapping in a 575 board, but they're expensive anymore, and I want to give this accelerator something to do besides gather...

The Color Classic worked, but had the rusty dusties and some fishy smelling caps on the analog board. The logic board was in good shape and was recapped by the previous owner, so I didn't get/have to do that. So, I completely recapped the analog board, including this guy that wasn't part of...

So the 512K put up a bit of a fight...specifically the analog board. It was flupping upon arrival. Closer inspection showed signs of a previous RIFA explosion and previous attempts at repairs. The legs of the RIFA replacement weren't clipped, and one of them wasn't soldered to anything...

128k had a bath and is done for now...moving on to the 512k. I didn't have a cord for the keyboard, so I temporarily soldered one end of a phone cord to the keyboard PCB while I acquire the correct cable 🙃

Was that 6100 a 7100 before you set that monitor on it? :p

And to you as well!

Ya I'm not sure either. Here are some photos of the drive (all caps and components are original AFAIK): I also found this thread where two other people claim to have OA-D34V-22 drives that work with -A ROMs, but only when adequately shielded...

Starting working on the 128k today. The logic board looks like it previously had a RAM upgrade installed (pin sockets installed at E3 above the CPU, something previously soldered to a few CPU pins, and sockets installed for the DRAM chips themselves). Also...no RAM :): So, I installed...

I'll have to give that a try...I have a bunch of that Remington dry lube. Only used small amounts of white lithium grease on floppy drives before. I also have Hornady One-Shot that I use to clean and lube my reloader. It dries to a slick, non-tacky finish too, so it might work well.