Oh, I loved working on the insides of computers, AND BEING PAID FOR IT--- when I was a kid.
Nothing quite like being in the computer lab, and having a deep felt heart-to-heart with the lab admin about how a certain thing with a certain workstation was probably XYZ related.
LOL
I learned how to set up IP based networks, how to cable twisted pair and thinnet ethernet, how to manage collision domains, and all that fun stuff "cowboy and indian" style, as the shady bossman would simply refuse to NOT accept a paying commission, even if NONE of us had ANY experience with that architecture of environment. I got to become very good at gathering, reading, digesting, and applying information from usenet newsgroups (workplace had real internet access and several phonelines that could be used for hopping onto BBS systems), and along with the japanese american guy (great person, wicked sharp.) we could tackle just about anything he threw at us. I remember telling him about twisted pair ethernet maximum cable length restrictions once, because a client wanted to run an ethernet drop between buildings that was simply just TOO DAMNED FAR for twisted pair, and suggested link aggregated thinnet, even though thinnet was slower-- because thinnet used grounded cables, and could handle 5 times the distance. I realize this is a very advanced conversation to have been having now that I am older-- but at the time, I was stuck trying to find a solution to the "IT MUST BE SOLVED!" hardassedness of that shady bastard. LOL
LOL-- there was this one time that a metals processing company specializing in steel kept having problems with their computerized workstations, even though these workstations were specially designed to be very hardened against damage.
Turns out, they were sucking in corrosive vapors from the nearby steel pickling tanks, and those vapors were literally rusting the insides out at an absurd rate. It was so bad, that the chasis would literally CRUMBLE at the slightest touch. I went to plug in a serial mouse on the system, and the serial port crunched into the back when I inserted the cable. Just "CRUNCH!" and little bits of rust and dust fell off the back. Opening it up, the whole inside was heavily oxidized, and just a total horror show.
The most noteworthy repair though, was the one a drunken redneck literally SHOT with a 20 gauge slug. Very interesting, that one.
So many colorful stories-- It was a great time to be a kid.