The art of fixing things is rather out of style these days, but it's been a major part of every human society until rather recently. If something breaks, you fix it, you don't just use it as an excuse to buy new.
Developing the skills to do "deep repair" sort of stuff on electronics is useful. It can be a profitable little side gig in a range of ways. Re-capping some old electronics to bring them back to life is quite satisfying, too.