"Arfa Daily"

Then, all of a sudden, the customer comes back to me, and says that the
project has been called off, because their customer, who has a very great
deal of these machines installed in their premises, wants only brand new
boards as replacements, and is not prepared to accept boards that have
been repaired. I asked why this was, and the answer that I got was that
they felt that new boards would be more reliable. No matter how much that
I pointed out that the real life evidence of bathtub curves and infant
mortality, clearly refuted that premise, they were not having any of it.
They seemed unable to understand that a board that has been in service for
a while has passed the infant mortality stage, and is fully burnt in. And
that it is in the main phase of its service life, where any problems are
likely to be random single component failures. None of the parts on this
board were specials, so it could have been repaired to full manufacturer's
spec, using original manufacturer's parts. In fact, the triac that seemed
to be failing could actually have been upgraded to the next one in the
series to *improve* overall reliability.


** You has to supply and therefore warranty the new PCBs ??

Not * YOU * I hope.

I would make the customer purchase all such boards and then you have no
warranty obligation over them.



.... Phil