I remember as a kid helping my Dad assemble our Heathkit TV. It took probably about a year and a half, but we got it done.
Heathkit was the tech school of the time. The kits were sometimes complicated but if you took the time, thought it out ...and built something you learned a lot.
Because of that I learned a lot of skills. Decades ago when money was tight and our tv was on the blink I taught oldest son to test, diagnose and replace parts. Soldering was important too.
We kept a Sharp 19” running way longer than normal.
Last year under warranty I had a tech fix our Sharp 55” Aquos. I had already accessed the hidden tech menus and figured out it was a power supply problem. Tech was very happy replacing the board in less than ten minutes and charging Sharp.
Could have done it myself.