I used to call the Macintosh the user friendly computer that will kill you with a smile since the early models (the 128k, the 512k, and the Plus) had exposed po

I used to call the Macintosh the user friendly computer that will kill you with a smile since the early models (the 128k, the 512k, and the Plus) had exposed power supplies once the case is open. Staying clear of the CRT is usually not an issue when turning on a machine while testing it, but your hand is within a centimeter of exposed AC mains power. Needless to say I did end up getting shocked a couple of times and the physical sensation is interesting. It really made me appreciate modular designs, where the power supply and CRT are completely fenced off in its own enclosure.