Finally got into the SE/30 tonight. I have to say, it's an incredibly clean machine. I was pretty surprised, since it sat in the guy's attic for years.

The bad news is, there's definitely some electrolyte on the logic board. I'm sure this is why it will freeze after running for a few minutes. Charles - do the PSUs on these need recapped as well? 

Some photos:

Just a very fine layer of dust on everything...



Good news! The battery is fine. 



This thing really is super clean.





I really think I lucked out. The ORIGINAL battery was still inside. Not a bit of corrosion.



I have a feeling these are 8 1mb SIMMs. ROM simm looks brand new. 



Logic board is in good shape, other than the electrolyte. Connector pins are all shiny and clean.