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Good news: There has been some work going on behind the scenes! There's currently a power switch/DC input mounting solution for the Mac LC version in the works. First prototype didn't quite have tolerances needed to get the power toggle in, but the 2nd should. It was printed today and should be...

Nope. Completely different electronically.

Something worth noting is ebay won't show an actual selling price for an offer. Having recently helped someone sell a bunch of PowerBooks, they really aren't worth much money. Full selling list:  Wallstreet/233 / 96M / CD / No HD - $32.50 Wallstreet/250 / 160M / 4G HDD / Two Batteries - $25...

To be clear, it's the original 24 PDQ and not the 8-24 PDQ, correct? I've got an /24 PDQ with the 1.24 ROM but I'll need to dump it at a friend's house. My programmer decided to stop working.

More or less just something like this:   Ignore that center track, it's an image I stole from the internet. Coil power would be on the left and coming in and the mains switching on the right. Keep traces and planes away from the mains side area that aren't needed - such as running anything DC...

Feel free to use what you want from the attached file - I've got no plans to do anything with it. I just hacked up the mAcTX adapter board and adapted it for a Quadra 900 series. In theory all you'd need to do to make it work is have a PCB made and use a 22 to 22 pin cable. In practice no idea -...

The electrolytic inside these absolutely do need replaced. They also leak out onto the board but don’t cause nearly as much damage. Easy fix though - they aren’t surface mount.

Maybe it's been a while but we haven't have forgotten you! The PCB for the Macintosh IIc* is finished footprint wise, and I think we've got the components nailed down too. So, onwards with findings: 1.) ATX seems to not be ATX 100% of the time. By that I mean we've been thinking @blusnowkitty's...

More update: For get the whole voltage thing for now as I've now got two IIsi s confirmed working. Got a 2nd recapped and it's all rainbows and sunshine. And here's a video of it working:

That's just Mac OS being Mac OS. Anything prior to OS X does that really.

I got the IIsi board today, got it recapped and got it working. Some fun discoveries though. To start with, the IIsi is possibly special. By that I mean it's /pfw voltage for button press seems to be a bit different. Lemme make a list. IIsi I have here: 3.4v @blusnowkitty 's IIsi: 4.4v IIci...

Quadra 650 for sure. The cases are pretty reasonable despite being ugly. They run at 33 MHz and are (usually) a full '040. There's no reason to pay the extra cost for something like an 840 for an extra 7 MHz.  As a bonus only the power supplies need recapped - the motherboards are solid caps...

To expand a bit, the LC is a different thing all together. Physically this particular board won't fit within the LC PSU shell. The LC also doesn't require a /pfw inversion (they don't support soft power) and it uses -5V rather than -12V. We've talked about it and even have some plans however...

Of course, if you're working with other people I'd recommend using KiKad There's Eagle can be a bit special when exporting to work with other programs and break silkscreen text placement and those kind of goodies. That, and you'll lose all the device footprints and just get holes in general...

A few days late, but the third version boards finally showed up. Built and working 100% no issues for me on my test systems, a IIci, IIcx and a Quadra 650. As some bonus fun, I can now load up the systems and stay (barely) within tolerance on the 5V rail using only poverty spec 1oz copper. +/-...

So if we were to switch to a board using a transistor rather than the inverter (smart move really) here's something along the lines of what it'd come out like. With rearranging of the big stuff, I'm able to clear up even more space which adds even more free plane space between the power supply...

More progress tonight! I don't have the IIsi stuff or Rev 3 boards in the mail yet but I do have a transistor test setup. I can confirm everything works fine using a 2SC3904 NPN transistor and a couple resistors. It's built on a piece of solder breadboard with some machine pins soldered on so I...

I had an SE with a CR2032 mod that worked for over 2 years until I sold it. Still working at the time. I'll have to see how low a Mac SE will go before losing PRAM\clock settings with a bench PSU. It'll be a lot quicker than waiting for batteries to run down.

And as an alternative to that, anyone in the Bay Area or Sacramento Area have a IIsi I can borrow for testing? I'll even recap it for ya if it's not yet recapped as long as I can get something to test with :)  .