I did a quick check out of the PDP-8. Everything in memory seemed to be corrupted but when I reloaded everything seemed to work ok except the deposit and examine switches are a little flaky. They are usable but you need to watch out for it incrementing by more than one and go back and fix the address. I should be able to clean them at a future workshop. I left it with the accumulator light pattern program at 100 octal and the punch block letters on paper tape at 200 octal. The punch demo may be another thing visitors can do and take home if we have more paper tape. There is a notebook with the machine with operating instructions and I can walk people through operating it if anyone is interested. I would recommend turning off the power strip I left tucked under the right rear if the backplanes are open to make sure nobody can reach in and find exposed AC. Don't turn it on without closing the backplanes for the same reason. There is lots of exposed AC when the machine is on. Closing also helps the cooling of the power supply.