On Fri, 17 Jun 2016 22:35:42 +0100 Richard Melville <[email protected]> wrote:
> > On 15 June 2016 at 02:11, Bruce Dubbs <[email protected]> wrote: > > > >> I talked to some techs today and thy said it was probably a capacitor > >> problem in the power supply. If disconnected for an extended time, they > >> lose some of their properties. Most power supplies have some sort of > >> trickle current even when powered off. They said I should probably replace > >> the power supply, but that would probably cost more than the whole system > >> is > >> worth. > > > (message resent owing to reception failure) More specifically, from > experience, I suspect that it's an electrolytic capacitor at fault; > they're nasty, leaky things and are > very common, particularly in power supplies. They're generally used > for smoothing and noise reduction. When they fail it is often > possible to see signs of bulging, discolouration, or electrolyte > leaking from the capacitor casing. If you have the time you could > open the power supply and replace the faulty component. That would be > the cheapest option, neglecting the time taken, of course. > > Bear in mind though that they do hold a charge. I remember from my > time working in labs that some technicians thought it a good idea to > charge large electrolytic capacitors and then leave them lying > innocently on the work bench for some unwary person to pick up :-) > > Richard Hello Richard, Aaediwen and I had some fun about 10 years ago: http://clfs.org/~kb0iic/Cap_Short.MPG Also, as far as capacitors and motherboards, there was a span where manufactures ordered a lot of bad capacitors and used them during manufacturing. The Abit BP-6 comes to mind with the dual Celerons, and had to replace all of them with some decent tantalum capacitors. I always have a supply of components when needed. As far as the surface mount and multi-layered motherboards of today, it is quite difficult to work with. Ah the days of repairing things while you could effortlessly without special tools. Cars are like that, too. Gotta take the engine out just to replace most things these days. Sincerely, William Harrington -- William Harrington <[email protected]> -- http://lists.linuxfromscratch.org/listinfo/lfs-support FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page Do not top post on this list. A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail? http://en.wikipedia.org/wiki/Posting_style
