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Given a relatively wide-response greyscale sensor, you can also have a certain amount of fun making false-colour images using filters that aren't RGB; with camera sensors a fun one is narrowband hydrogen-alpha, but I doubt that would work well with a scanner. But definitely one to consider.

The cracks are often extremely hard to see. Reflow them as a matter of routine. As a general social note, if you ask for people's advice, a lot of people suggest doing X and then you just discount it on the grounds of 'doesn't look like that to me' without any further reason, people are going...

Depends what you mean by 'decent'. Duos in general are like proto-Airs; they sacrifice performance and connectivity for weight and size, and they have the dock thing. The 2300c is the only PPC Duo; so if that sounds like your thing, yes, it's decent. If what you mean is 'is it a 9500...

Given those symptoms, though, might also be a dodgy solder joint on one of those new capacitors... being fully open or high resistance much of the time but then either warming up or physically flexing to make contact sometimes.

Yes, likely to be the contacts in the jack. But check the whole signal path always, don't just blindly assume it's capacitors, there are plenty of other things to go wrong in those machines.

In case it helps, this is a schematic for a 7-port hub I knocked up some time ago using a pair of CH334s. I use this hub every day so I know the design is basically sound. This uses polyfuses on the power lines; you can get chips to do the current limiting that talk to the CH334 but they were...

some people just want to watch the world burn

Where are you?

If it helps, I've taken loads of those buggers to bits at this point and you know what? I still sometimes forget the speaker connector and end up bending the pins. It's just one of those things.

the quadra 605 is the same machine as the lc475 over here. the 605 cases are ropy, but the machines within are really very decent.

the CH334U is pretty easy.

If you got these from an ex-IT person you may have got lucky and the may have already removed them, because it's relatively well-known that it's a good idea. But you shouldn't assume that, or that they didn't miss one - because if they did miss one, sod's law says it's in the computer you want...

Yes, I'm afraid so. I got The Fear just looking at that pile, you've taken on a lot of work to get it all sorted. Nearly all computers have batteries in to keep the clock going when the power is off, and it's those that are the problem here.

Get all the batteries out first, then make a spreadsheet. Assess for condition and damage; you don't need to know much about how the machines ought to look to know whether they're knackered or not. Then work out what order you want to do things in, and what you want to keep vs. get rid of.

The other thing to bear in mind is that most LC PDS graphics cards, at least as far as I know, were relatively low-end upgrades for relatively low-end machines. As far as I know, there really weren't any to compare with the relatively high-end cards you got for NuBus or, very occasionally, 040...

Yes, install a minimal 7.5, open it in resedit and run amuck with the delete key. It'll be fun and educational ;-).

Not that good a memory - I thought you'd hooked up the emulated serial port to a TCP connection. Though I think Basilisk II could do that, in which case you could run B II in a VM somewhere online and use one of the modem emulator dongles to "dial up" to it.

I'm afraid Apple's own naming strategy made things here much more complicated than they needed to be. Originally, AppleTalk only referred to LocalTalk, so some (especially early) software that claims to be AppleTalk compatible is actually only LocalTalk compatible. But if became obvious that...

Modem emulators will not do LocalTalk. LocalTalk is not RS232 and is not point-to-point, it's point-to-multipoint, which has historically been a right pain in the backside to do well on the Internet (until a year ago this was what I did professionally). It's not just a point-to-multipoint...

This is a gloriously ominous phrase, and feels like it should be the motto of the C Standards Committee