>>>> From: "tony duell" <a...@p850ug1.demon.co.uk> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk@classiccmp.org> Sent: Wednesday, 22 July, 2015 12:39:42 PM Subject: RE: PDP 11 gear finally moved
> > 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. <<<< and - like the capacitor replacement question this is an "it depends". For some cars - including the Mercedes A-class (at least earlier models) - it is almost impossible to change the headlight bulb when the car is at ground level because it is accessed through a hatch in the wheel arch, whereas if the car is up on the garage lift with the wheel removed it is trivial. In that case it is probably best to change both bulbs when one fails. For capacitors (to get back OT) I'd be inclined to take one failure as "happenstance" whereas a second one as beginning to show a pattern. Andy
