Folks, My thanks to Brian, Jeffrey, Josh, John, and Anthony for their helpful replies!
I had been thinking along the lines that an inspection was required before powering up the Model 100, as I’d do with a line-powered computer. But based on the comments from Brian and Anthony, I'll try the “just turn it on” approach and report back to you all. If the news isn’t good, I’ll contact Jeff and Josh, who provide repair services. Thanks again. Regards, Steve