A bit of digression, but the point is that, in
some cases, it is
only certain particular components which are subject to frequent
failure, and in these cases, if no others, board repair is cost
effective.
In most cases with failures on boards (or most anything), there are
"the usual suspects".
(More cost effective if they were to socket those
parts...)
This is very incorrect. There is a reason industry almost never uses
sockets anymore. More things to break! Most sockets are actually less
reliable than the parts they hold - it has been that way since the
1960s. Sockets are components that do not add anything to circuits
except costs and headaches.
There are a few places where sockets justify themselves - very few.
--
Will