[ale] fried innards

[Jim Kinney]

It is feasible that a crimp in the plug itself was poor and it finally hit
the inflection point in the failure curve where it escalated rapidly. It's
easy to pull 10-12A on the 12V rail and not trip the fuse as it's still
below the fuse point but above the "turn the wire into a resistor" point.


On Tue, Aug 6, 2013 at 3:28 PM, Sean Kilpatrick <kilpatms at gmail.com> wrote:

> **
>
> I no longer remember the brand of power supply, but I do find it
> interesting that no brand name or electrical details are visible on the
> surfaces of the PSU that I can see.
>
> Looking at the charred remains of the fried plug, I can see that both
> ground wires popped out of the plug and the 12 volt yellow wire has its
> insulation burned off for nearly 2 inches. Yet the PSU fuse did not trip.
>
> Sean
>
>
> --------------------------------------------------------------------------------
>
> On Tuesday, August 06, 2013 03:11:21 pm Calvin Harrigan wrote:
>
> > On 8/6/2013 2:54 PM, Sean Kilpatrick wrote:
>
> > > Power supply is a replacement. Got burned years ago buy a cheap power
>
> > > supply. I no longer remember the specs on this one, but it is AT
>
> > > LEAST 30% larger than necessary.
>
> > >
>
> > > BUT, the box itself is more than 7 years old, and the mobo/cpu and
>
> > > power supply are five years old, as are the RAID-1 drives.
>
> > >
>
> > > Everything else seems to be working as it should. I'm thinking this
>
> > > may be the "handwriting on the wall." If that's the case, I'd better
>
> > > go get a lottery ticket! :)
>
> > >
>
> > > Sean
>
> >
>
> > <snip>
>
> > Like someone mentioned above, it was probably a loose/bad connection,
>
> > but still it's very odd. Trying to imagine what could go short in A
>
> > DVD-ROM to allow that kind of current draw. Filter Caps? reverse
>
> > voltage protection Diode? If all is working as it was sans the DVD,
>
> > you're probably OK. But for my information, what brand is the power
>
> > supply?
>
> >
>
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-- 
-- 
James P. Kinney III
*
*Every time you stop a school, you will have to build a jail. What you gain
at one end you lose at the other. It's like feeding a dog on his own tail.
It won't fatten the dog.
- Speech 11/23/1900 Mark Twain
*
http://heretothereideas.blogspot.com/
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