But, if
you know what and why to do something, a swap is not a crime.
Our views will differ
on this, I suspect :-)
I see nothing more wrong with swapping boards than with swapping chips,
fundamentally. If I have a machine with a blown cg6, I pull it and pop
in another, problem solved. (I have enough spare cg6s that I do not
expect to run out in the foreseeable future.)
Most of the criticisms of boardswapping I've seen have actually been
against *blind* boardswapping, against easter-egg swaps in the hope
I would agree. Problem is that to fully test a board is a lot of work
(it's a lot more than just running diagnostics (actually, I have a
problem with using a non-working device to tell me what's wrong...). You
need to check the timing of every signal on the connectors of said board.
that they'll perturb the symptom out of immediate
existence. I agree
that that is, at best, a last resort - but I see nothing wrong with
swapping out a bad board, once you're sure it's the board that's bad,
any more than I do for any other swappable piece. (Whether it's worth
repairing a board depends on lots of things; sometimes, swapping and
tossing the bad one is a right answer.)
As well all know, it's finding the fault that takes the time. If you've
found the fault so that you're sure a particular board is bad, then you
(almsot?) always know what's wrong with that board, and can isolate the
fault to 2 or 3 components. In which case it's probably quicker to
replace just the faulty part than to find the replacement board.
-tony