Monday, May 29, 2006, 2:01:03 PM, Ethan wrote:
One of my 11/750s (S/N BT000354) was nearly the cause
of a Halon dump
when it was in a commercial data center, c. 1985. It seems that the
Unibus cable between the CPU bay and the BA-11 we used for testing
COMBOARDs had gotten pinched between the BA-11 and the RK07 rack it
was mounted in.
At least there was a visible cause.
My incident #1 was me being dumb for not finding the 115/230V jumper
on 'boromir' [1] so I did blow the PSU as well as a fuse in the hosue
it was booted in. It actually took ~5 seconds for the fuse to kick
in... no further damage then a shortened and currently dead/unrepaired
PSU. Ok, that was pretty easy to resolve too.
Incident #2 was 'sauron' [2] starting to smell badly... and
he was actually humming happily 3 rooms further away in the basement
of my parents house. I was testing a new board and currently I assume
that this one is bad. I totally stripped the machine and couldn't find
a source for the smell. The board also doesn't have a distinctive
smell to it, or marks of the incident. No real reason ever found.
The recent one (#3) was the currently unnamed 3130 IRIS [3]. The PSU
seems to be the source of the trouble but I need to do closer
inspection if I can come up with a real reason.
The worst thing aside from the apparent danger of fire is that all
three happened in my parents house. I no longer live there but the
majority of my collection is in their basement and they don't really
feel well with it. I guess I've covered/hidden the latest incident
pretty well. ;-)
The only casualty (besides our wits!) was the Unibus
cable.
I'm always quite surprised what the computers itself survive. Sparks,
smoke, overvoltage and still... with some replacement in the
infrastructure many of them come up again without trouble. The result
of terribly expensive quality hardware?
Gerhard
PS / PR0N:
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[1]
http://sgistuff.g-lenerz.de/collection/1201.php
[2]
http://sgistuff.g-lenerz.de/collection/1200.php
http://sgistuff.g-lenerz.de/pictures/powerseries.php#outside
http://sgistuff.g-lenerz.de/pictures/powerseries.php#cardcage
[3]
http://sgistuff.g-lenerz.de/collection/1500.php