I wished all devices came with at least a schematics (or downloadable pdf) even if it weren't designed to be repairable. I remember getting my first computer,

I wished all devices came with at least a schematics (or downloadable pdf) even if it weren't designed to be repairable. I remember getting my first computer, C64 in the 80's, and it came with schematics in the back of user manual. Even though I didn't understand any of it as a kid, I thought it was very interesting and piqued my curiosity toward learning computers.