IBM 5155 analogue display fault

Tony Duell ard at p850ug1.demon.co.uk
Tue May 31 17:45:10 CDT 2005


> 
> >> Ensuring that the ink on the note isn't going to fade in a matter of
> >> years, or any tape used isn't going to cause stains that will damage
> >> the case etc. :-)
> > Don't use tape.  Use a paper tag with a bit of string tied somewhere
> > inside the case.  Standard archival procedure.
> 
> I wouldn't trust a paper bag; it'll rip and dump the (probably
> conductive) screws all over the board at the worst moment.  I'd use a
> plastic pill bottle, probably; if that comes loose, it is much less

But some plastics degrade and turn brittle with time (and I suspect those 
used for pill bottles do, since said bottles are not required to have a 
long life). Again your screws will fall out and find the worst possible 
points to short-coricot.

If it was a particularly rare or significant machine, I might to that 
with any components I had to replace (because they'd failed). I'd keep 
the originals with the machine for historical reasons. But I wouldn't 
replace anything I didn't have to replace.

-tony



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