PDP 11 gear finally moved

tony duell ard at p850ug1.demon.co.uk
Wed Jul 22 06:39:42 CDT 2015

> I might think twice about doing a board that was fragile with age, but
> otherwise, change 'em all.  Like replacing both headlight bulbs if one
> goes out--it's just a matter of time before the other one goes.

Do you seriously replace both headlight bulbs when one fails? I know of 
nobody who does that. Generally you carry a spare bulb kit and a screwdriver
and if a bulb fails, pull over and change it. 

Why not change all other bulbs on the car at the same time? Or change them
all once a year as part of the service [1]? What about bulbs in your house?

[1] OK, this is done for things like lighthouse bulbs which are replaced after so
many hours of operation, but that is a rather different case.


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