I said Minor problems, because overall that's what they were. The Sony machines I have are very solid, and I bought the Barco knowing that they had issues. But for me, replacing a FET and fixing some solder joints is only a minor problem.
Someone who's never worked with a crt projector and/or at least has some soldering and electronics experience, you'd better hope that you get lucky when you buy a crt, because unless it's new or very slightly used, you're going to have to fix or tweak something sooner or later.
And I don't count learning how to converge, operate and tweak the projector and kind of problem. I'm talking the kind of problems that involve removing the cover and soldering.
But overall, I'd still say the old tanks are more reliable than typical consumer electronics that are made these days. And working on older electronics technology is my job. A lot of the modern stuff is just what most people call disposable.
And I think some people have an easier time remembering when their crt breaks, because they are so big and heavy. No one remembers how many times their VCR, CD Player, DVD player etc. quit working. And if it was a standard TV that quit, it would usually just go to the curb and nobody would hear about it. With CRT projectors, you hear about the problems a lot more.