Nobody repairs a PSU nowadays, they just bin it and bung in a new one. After all, they are just thyristors and capacitors and a bit of regulation circuitry. The olden days of people running around in goat skins and using transformers are over! PCs are pretty much a plug-n-go affair today.
All this 'what if?' nonsense is just that, nonsense!
I began by cleaning cars at the age of 14 for five shillings a car. What if I had scratched a car? What if I slipped and fell and injured myself? What if Zeus descended from Mount Olympus, disguised as a water buffalo and trampled the car owner to death?
I didn't stay with cleaning cars, I did it just long enough to be able to buy first a tape recorder and then a cine-camera and thereby launch a career in the media by learning the basics of making silly little films, featuring my buddies and my dogs.
Doing business at ANY level is all about taking a risk. If you don't like risk, don't become a business person. Stay home, stay in bed, pull the duvet over your head, listen to Radio Four and hide from the World (and listen to reports of thousands of murderous immigrants pouring across the English Channel on lilos, planks of wood, oil slicks, or anything they can get a hold of).
Brandon isn't going to spend the rest of his life fixing computers, not just because in the long run there are better things to do, but also because computers will become so cheap and deeply integrated, that fixing them in ten or twenty years time will just not be worth the hassle.
But right now, it's a great way for a 15-yr-old Brandon to earn some money and learn the ropes of profit and loss, expenditures and gauging risk.
It ain't really a business, but it's a great way to pick up some trouser money and learn some very useful lessons at the same time. Being able to fix a computer is many, many times more useful than most of the guff kids are forced to learn at school.
A motivational story -
Let me tell you about a guy who began playing around in C++ at the age of 12 and at the age of 16 developed a quirky little media programme. Fast forward to 20 years of age and he had involved all his nerdy buddies and developed that and other small programmes and sold these on-line for $10 each. When thousands of dollars a day started pouring in, his father told him to set up a company and draft contracts, etc., etc.
(He tried going to college to study programming, but soon realised that he knew more than his lecturers, so he dropped out after just a few weeks!)
Big business got a whiff of this programme and offered him and his nerdy buddies $240m for the whole thing. He took the money and went to work for The Man. One day, he decided to put a new quirky product on-line and just for free. The Man didn't like it and they fell out, so at the ripe old age of 22, he 'retired' a very wealthy man ($60m trouser money) and started a new project.
Business Week called him "The World's most dangerous nerd!"
He squirreled all that money away for a rainy day and he invested absolutely nothing, other than his time, in this new and very ambitious software package.
He is now 34 and this new package is 12 years old and is just the best in its field. It is on position three in its market World-wide in user-base, though, because he only charges $60 for a license and that is on an honesty-box basis, so people can use it for free if they put up with a five-second nag screen, so turnover is only about $7m, but climbing rapidly.
This SW package is destroying whole corporations. One, whose CEO earns about what this guy has in turnover, has seen its share price fall from over $60 to under $6 and has had to fire 2,000 of its 3,400 staff.
He has just rewritten parts of the core code to widen the scope of uses, so that in years to come, it can enter whole new industries that today are in their infancy.