On Nov 14, 8:34*pm, "ATP" wrote:
... It's no longer cost
effective to change CPU's or rebuild carburetors or starter motors.

That's the heart of the problem.

There's also the complexity of modern devices. I can strip and
reassemble a Segway pretty quickly but wouldn't suggest it to owners.
Even in their lab we didn't have a manual. I learned by watching the
production line.

jsw