On Fri, 8 Jan 2016 11:13:01 -0800, Califbill billnews wrote:

40 years ago I made a living fixing devices that operated with vacuum
tubes. Not much call for it now other than the occasional guitar amp. :-)




What replaced those jobs?

Nothing. The jobs are just gone because it is cheaper to cut open the
box and plug in a new one from China than to fix the old one.
I remember when there was a TV repair shop in every strip mall and now
TVs are "Bic lighters". If they break, you throw them away if they are
off warranty. If they are on warranty, they give you a new one.

Computers are the same way and really started being like that in the
80s. It is why I migrated from fixing hardware to fixing "processes".