I was aged about 13 at the time. I was already into electronics, building and fixing things. We only had a black and white tv. So I got the idea of buying a faulty colour set and repairing it. I forget the make and model, but it was a huge all valve set, this would have been about 1976.
My dad delayed upgrading from a B&W to colour licence for almost a year, until he trusted the repaired set was going to last.
Over the next few years I bought more, fixed them and sold them, occasionally keeping one when I got one better than what we had.
In those early years, a lot of the sets I fixed were hideous all valve sets with live chassis and lethal EHT rectifier stacks. It's a wonder I didn't kill myself, and yes I did get quite a few electric shocks from the things. Things got a lot easier with first hybrid sets, then all solid state sets.
And that started me on a lifetime of buying faulty sets, repairing them and selling them. It's a fact I have never owned a tv set that was not faulty when I got it. I've repaired hundreds of them and still do a few from time to time now, mostly LCD sets now.
I've seen all the trends in styles of set, from nice real wood, to plastic pretend wood, then silver, then black, then silver, and currently we are in a "black" phase again (though the present shiny black I find awful, I much prefer matt black)
And the "gimmicks" the manufacturers like to stick on the front of sets. I had one some time back (a 22" FST) that proudly claimed to be "digital" of course long before digital tv was invented. I think it referred to electronic tuning rather than presets that you twiddled on older sets. Then there were the "stereo" sets that pre dated nicam stereo, so would only reproduce stereo sound from an external source.