[sdiy] "Boutique" capacitors

[Heitor Alves]

I've been reparing computers for about 10 years... since the Pentium 2
hit the market, its very usual to motherboards have theyr 2200uF caps
blown... not only from VIA FDI but even from Intel boards. 80% of the
mainboards problems derive from that problem... even my own board had
2 times some caps substituted with sucsess... its a market thing i
believe... no mainboard is made to live for more than 1.5 to 2 years
of intense use (24hrs on).

stay well

heitor


On 4 Feb 2005 22:14:29 -0500, R. D. Davis <rdd at rddavis.org> wrote:
> Quothe Batz Goodfortune, from writings of Sat, Feb 05, 2005 at
> 12:05:01PM +1030:
> > A while back there was a story about how some big Taiwanese cap maker
> > thought they hit the mother-load when they "Acquired" the top secret
> > formula for the dielectric used in some "Top Brand" low ESR Japanese
> > Electros. They went into production with them, offered them cheaper to
> > mother board manufacturers etc, and several months later, all these high
> > end computers were mysteriously dying. And some of these boards were the
> > REALLY expensive ones.
> 
> Funny that you should mention this at this time. :-) A few years ago,
> I purchased a a Mainboard motherboard, made by Elitegroup Computer
> Systems Co., Ltd.  in Taiwan.  It sat on a shelf until the other day,
> when the motherboard in one of my systems expired (another Mainboard,
> although a different, and slightly older, model).
> 
> Anyway, after putting the "new" motherboard in the chassis, and
> powering it up, the power supply began cycling, then I smelled
> something burning.  It turns out that ten out of twelve electrolytic
> caps had blown up (the tops of the caps had expanded).
> 
> The capacitors are 2,200uF and marked with G-LUXON 0117 (M).
> 
> --
> Copyright (C) 2005 R.D. Davis The difference between humans & other animals: an
> All Rights Reserved            unnatural belief that we're above Nature & her
> www.rddavis.org 410-744-4900    other creatures, using dogma to justify such
> Uncle Fester for President!      beliefs and to justify much human cruelty.
> 
>