[morzh]

Well, to be frank, when it comes to radios, especially the older types, a person with no electronic background could be (given some aptitude) coached, guided and instructed to take on one of those.
With TVs, let alone the Predicta, I would advise against such an endeavour.
A CRT TV is way more complex, way more sensitive to things a radio could tolerate, and, after all, waaaaay more dangerous.
I have to say, myself, even though I will eventually get to my Predicta, but my TV repair experience having been limited to a few repairs in the days of my youth, plus me being an EE and having decent experience with all kinds of electronics, I still will have to seek tons of advice from folks like Tim or Bob Andersen, and learn, learn and learn.

So, when comes to TV repair, seeking a specialist is a good idea.

As for starting to learn (if there is such an intent, which I have not seen stated so far), an old transformer radio (like Philco 70 or 96, like the one I am working on right now) is the best way to learn. And the weight of teh chassis for a young person should not be a deterrent