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They may be, I thought they were close to the originals, but it's possible the board files would not be useful in this situation.

They will also make modifications. I have had them swap tantalums for polymer electrolytics to keep the factory look of the can-type caps.

Oh wow, I know these machines cost quite a bit more in some European countries than in the US. Knowing that, you got an even better deal! I recommend Console 5 for cap kits, they have everything already packaged, and they use high quality caps. Alternatively you can order from Mouser or...

@Bolle, do you have any suggestions for programming the XC1736 chips? I assume you were able to successfully program one for your clone project.

Definitely try out the board files with the Altium viewer too. Since it is a "map" of the board, it is very easy to visually follow a trace from point A to B. The reloaded board is not an exact copy of the original so not all components and traces are in the exact location as a stock board, but...

Are there tools that will let you highlight traces on a Gerber file? That would be really helpful. Using the SE/30 Reloaded Gerber files with an online Gerber viewer will make following traces quite easy. I have experimented with a number of the online Gerber viewers and have found Altium...

Here is an excellent re-drawn version of the SE/30 schematics. This was created by one of the board members here, I didn't bookmark the original post I got it from so I can't give credit where credit is due, but I'm sure someone here will know who created it.

There were numerous RAM expansion boards available for the 512k, I have never heard of upgrading the onboard RAM, though that doesn't mean it isn't possible. The RAM expansion boards turn up for sale sometimes, that might be your best option unless you are just looking for a project.

Those sound like fun projects, and a great deal. Even if both logic boards were destroyed, the parts alone would be worth more than $60. For soldering practice I picked up a couple random old PC expansion cards for a couple bucks each from a recycler. Have you done any SMD soldering before?

I have a death-chime IIsi I have not been able to resurrect. It was working when I got it, then after a few uses it started the death-chime, though mine does the death chime rather quickly after the startup chime. I recapped my board, replaced all ALS245 chips, and replaced the onboard RAM with...

This is probably not a recommended method, but I use a small screwdriver to pry the chip up between the socket and the chip I do this with a slight twist of the screwdriver, and I do it in multiple small steps. I probably go back and forth between sides 15 or 20 times. When the pins are close to...

I have used these ones from eBay and have been happy with them, though I haven't tried any of the others so I can't do a comparison.

What was regretful about the IIsi?

A SCSI emulator such as Blue SCSI is a good option, as is a Floppy Emu floppy emulator. The Floppy Emu is more expensive, but it is great to have around if you are working with early Macs. Either of those will let you boot the machine. System 6.0.8 is the most common OS version people run. You...

Nice find!

Many people use an ATX extension cable to be able to power the board outside of the chassis for diagnostic work, that might eliminate the need for the RGB->HDMI dongle, though I do see how that would be a nice setup.

I plugged in a stereo headset, the sound comes out of both sides, and does not come out of the internal speaker at all while the headset is plugged in.

Good question, I put the machine away but I'll check tomorrow or the next day.

I have done both, same results. I first bodged term power from the external DB25 to the internal connector, then removed the bodge and powered the MacSD through the mini-USB plugged into a wall adapter. Edit: I'm not sure if it is relevant, but I also do not get this sound if I am using an...