Re: Electrolytic caps and Apple analog circuits (semi on topic)

[winston19842005 <bjjlyates@bellsouth.net>]

On 7/8/07 3:20 PM, in article
1183922400.107788.278700@q75g2000hsh.googlegroups.com,
"jsnospam@cimmeri.com" <js@cimmeri.com> wrote:
... 
> ALL THAT SAID... what's the deal with electrolytic cap failures?
> Anyone have any perspectives on the topic?
> - Why do some apparently seem to last forever -- I have some here from
> the 1950's that are still working -- and some fail some damn quickly?
> 
> - Are there any patterns to be discerned -- such as the smaller ones
> last longer, or lower voltage ones.. etc?
> 
> - Are some brands better than others?
> 
> This is all very useful info to have when making repairs.    I
> occasionally repair Apple power supplies or other analog circuits, but
> haven't had enough experience to draw any generalizations.
> 
> If this topic has been covered previously, please alert me and I'll
> search archives more carefully.
> 
> Thanks!
> ~ J
> 

Www.badcaps.net

Caps of course go bad over time, but the failure rate among the more recent
caps (from the 90's up to now) is utterly ridiculous.

Dell has had a lot of failures due to bad caps within the past couple of
years, and the place I work at has seen a lot of them ourselves.

Strange, like you said, how older caps were so much longer lasting. I have
computers 20 years+ that still have good caps, no sign of leaking or bloated
caps...