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I can't help with the type and size, but as it happened I'm replacing a cracked side panel today, so snapped you these : 🙂

Probably not. Those two 10nF caps (CP19 & CP38) on the 220V (240V according to the .txt) are safety caps. The board will likely work without them but its not advisable since you're running the higher input voltage. Also note the voltage rating on CP1 (and CP13 if you have an early A/B)...

I found the attached post a few years back and successfully used it to convert a 220V Classic II to 110V. Good luck!

Um... why not just use MacTerminal? https://en.wikipedia.org/wiki/MacTerminal

Yes, but @croissantking has meowToasts. :)

I wonder if there are some variations in the battery holder, mine's pretty secure with the clip in place. 🤷‍♂️

I'm not sure about that design (angled battery holder?)... on the original, it works like this (with the battery clip) -

OK... last one from me today. Some may have seen in the general Radius thread, but I also have another 24X with an earlier (1.42) ROM. Here's the card : ROM attached.

I was leaning that way... I knew about the RAMDAC, had missed the total VRAM. I guess I need to see if the "red" card will come to life. I sense some tinker-time coming this weekend. 😊

I'm back on this thread since my question is not limited to the 24X... Looking above, you can see the pics of my "red" card has a 24X 2.0 ROM (which I have posted in the other 24X-specific thread). However... when looking at my other 24X card, I spotted a significant design difference. Here...

Pretty sure I have a PrecClr 24X with a 1.4(?) ROM - I'll pull it out of my IIcx and have a look. Might have others down in my storage unit. Stay tuned.

No problem my end. Will be good to have a repo. Do check my 24X dump first. The 24XP has been confirmed working.

Awesome! Great that it worked for you! 👍

PrecisionColor 24XP ROM 2.0 - this is from a working card. :)

And this (warning, it's a scan, so large file!) - https://vintageapple.org/macmanuals/pdf/Macintosh_II_manual_alt_1986.pdf Page 207 : So... 8Mb = 2 x banks of 4 x 1Mb should be fine.

And then we have this -- https://www.applerepairmanuals.com/the_manuals_are_in_here/Macintosh_II_IIx_IIfx.pdf Which implies 8Mb (though that would require 1Mb SIMMs in both banks) is the Maximum. :unsure:

https://support.apple.com/kb/sp193?locale=en_US Implies that 4Mb can be used - but only in Bank B. I'm sure I've run my original Mac II with 8Mb = 1Mb SIMMs in Banks A and B.

OK, so... here's the 2.0 dump. CAUTION : I have a feeling this card was not working properly (which is why I have it loose). So be warned if you try this dump and it doesn't work. I will try the card again this coming w/e and report back. In addition, looking at the HEX, I was expecting to...

Um... three, perhaps. 😀

a few... ...and pretty sure I have more in my storage unit. 🙄 Once you've adjusted, we can sort through the other things we've been discussing. 😀