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Thanks! Switch on its way and I'll probably recap at the same time...

OK, it looks like the switch! Now to extract it and see if there's a suitable replacement...

Thanks! I've extracted the analog power and power supply and will look for cold joints. Initially, though, the internal fuse seems good though. Otherwise, does the power supply need a specific load to be tested in isolation, or will the rails come up without one?

I grabbed an SE/30 from Craigslist tonight which was sold as dead. Returning home, I found a couple of things: - The motherboard was actually in good shape, with no obvious major battery or capacitor leakage. That said, one of the vias by the battery (just one!) was green and corroded, although...

I have an SE/30 with a soldered CPU, and found a Daystar Digital 40Mhz accelerator - which obviously needs a socket! I'm comfortable with re-working PCBs, and have a desoldering gun that should make short work of removing the existing 68030 from the board - along with a new Mill-Max socket...

So I dug out a Mac Plus and SE/30 that had been sat in storage for a while, and apart from a failing hard drive in the SE/30 they booted fine - while, more importantly, there was no evidence of battery leakage (that said, the SMT caps were leaking and needed a cleanup - I'll get around to...