IBM 5155 analogue display fault
julesrichardsonuk at yahoo.co.uk
Thu Jun 2 06:13:43 CDT 2005
On Thu, 2005-06-02 at 00:06 +0100, Tony Duell wrote:
> > On Tue, 31 May 2005, Randy McLaughlin wrote:
> > > To replace an original part with a different part with no valid reason it is
> > > a shame, part of history is lost for no good reason.
> > The argument then boils down to what is or is not a "valid" reason, and
> > whether the change is enough to get in an uproar over (i.e. "history is
> > lost" if two screws are replaced).
> I would argue that history is lost if _any_ change is made, and
> certainly if any part is replaced.
Much like modifying PCBs... :-)
Remember this is a machine that's going to be used by children at events
(well, assuming the primary one is out of action); it's going to have a
very different life to static exhibits or operational machines that
aren't left totally open for people to play with.
> Also, please remember that this machine is owned by a museum. I would
> expect museums to have higher standards for preserving originality than
> most enthusiasts. Pity this doesn't seem to be the case.
We have several 5155s, all in original state. Unifying the screws on one
that's most likely to need to be dismantled seems like a sensible thing
to do for that reason. Remember that these are not - at this time - rare
If at some stage they *do* become rare then fitting original screws is
possible if needs be as we have reference machines (and very likely the
relevant technical info on the shelf)
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