I looked at the curriculum at the local Vocational High School and, they don't even offer a basic electricity or electronics courses. Asked a kid from the local Technical / Community college if he knew anything about "Impedance", he asked , "Is that anything like Latency on a network?"

Surface mounted devices make it impossible for the average Tek to repair so, it comes down to board level or whole device swap-out.

How many folks are there around who can work with B+ voltages now days, who is building with tubes?

The hobby is being redefined if not, choked to death by technology.

.