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Could you add a feature to have it make a backup of the files before patching them? What error does it give if you've already patched? I assume the target signature doesn't exist then.

That looks incredible. 

That's an impressive bit of work, and so clean too. Is it possible to use a giant capacitor to keep things alive while the switchover happens, or is the relay just super-duper slow?

Happy to help. It definitely made a recent job (Famicom AV board) go a lot smoother since I could just push old wires out of the holes. Since they were an impulse buy, it did take me a few months before I figured out this is what they were really good at. Usually in my experience cleaning...

It looks a bit like humidity damage - Japanese machines often aren’t stored in anything approaching a climate-controlled environment. Try brushing a bit of vinegar and then alcohol on there first and see if it goes away. 

Thanks for doing this and especially for the quality write-up. I look forward to learning from it!

SmallyMouse2 could work, it's to provide a semi-universal USB to quadrature mouse converter. It looks like there's also a new project called mouSTer which is in development and should make a really nice clean tiny adapter PCB, and has joystick support for some reason, but no Mac emulation mode...

Old thread, but I figured I would chip in with some info. I've just gotten a set of "desoldering needles" from AliExpress. They're basically stainless steel needles that you put into the heated-up joint and solder won't stick to them. They clear holes fairly well, although I've only needed to...

That's some really dedicated work, impressive commitment. I wonder if it is feasible to make a new flat flex cable using e.g. an Oshpark flex PCB service? Probably not cheap, and likely would take just as long to do all the measurements. Any luck with the trackball bezel? I'm looking for some...

The NES composite has a bunch of weird things going on with the sync so sometimes TVs get confused about the "white level" of a signal, if that makes sense. One of my side projects is puzzling through adding a composite output to a Famicom (Japanese NES.) It works okay but the blue is oddly...

I'm really curious about this too - I had thought the EGRET was more custom than it actually is, but now that I look at the ADB technotes it does seem to be a 68hc05 microcontroller (looks like it's even inside CUDA on the PPCs). I don't know if the pinout is feasible or if it's a custom package...

Current is drawn by the eMate, so a 2A adapter should be just fine as the eMate isn't expected to draw more than 1.2A. The error is probably coming from some battery management system noticing that it's putting juice into the battery but the battery isn't recharging. :)

Nice save. I've got a IIfx with double-Maxell damage that I need to get started on as well, so this gives me hope that mine could possibly be saved as well.

This is great in so many ways. Weird obscure niche hardware that is technically amazing; It gets documented thoroughly through a reverse engineering; Not just that, but new ones get built and open-sourced. Hats off. I wish I had a Portable so I'd have an excuse to build one of these.

Thanks for the link! It does seem like it's miles away from practically damaging the trackpad. I guess I'll see if I find anything when I get around to opening up the PowerBook.

Sorry for bumping the thread again, but do you have a picture of the old clock/PRAM backup battery? I am wondering if it might be swelling or leaking and causing my trackpad issues. Basically, even though my machine has been stored in a cool dry place for the last few years, the trackpad seems...

That's very odd. If it were simply unpopulated I would expect it to be just empty holes, not two resistor legs dangling in the breeze. What does the other side of the board look like there?

Is the LC motherboard itself shorted?

Yes, I hope not to melt another switch! It looks like Astec actually tied the wires around the terminals before soldering them, so no wonder they didn't come loose under my iron.

Thank you for the help. I ended up knocking it out of the power supply with some effort and on the side it says "ARCOLECTRIC ENGLAND 8550VB". Turns out Digikey still has at least a few variants of it. I ended up ordering this one since the terminals looked...