26 Oct
2005
26 Oct
'05
9:40 p.m.
Tony Duell wrote:
As regards what's more successful, _every_ time
I've tried
board-swapping, I've had more problems than I started with. When I find
the fault using test gear, I put it right, and the machine stays working.
Quite likely board-swapping will get the machine to do _something_ again
in a shorter time than finding the fault properly, but doing the latter
will get the machine doing the _right_ thing, and will make sure it keeps
on doing that.
You know, that always surprises me - I'd expect board swapping to rarely
cause problems for reasonably modular systems (I can believe it with
such as DEC hardware though, where you so much as cough near it and
something breaks ;)
Depends on the nature of the fault I suppose. For field faults on
current hardware I would expect board swapping to hardly ever make
things worse (my annoyance there would be if failed boards were just
tossed rather than being fixed back at base). For restoring classic
machines that may have been kept in bad conditions or not powered up in
years, it's likely a different story!
cheers
Jules