[olug] Hardware problems on an HP desktop

[Eric Pierce]

Bill, thanks for laying that all out.

Can I just pull a power supply from an older box I have laying around?    Are
there any kinds of incompatibility issues I need to be aware of between older
and newer PS?  I guess I should take a look to make sure an older PS has all
the right connections...

Thanks again.
Eric Pierce


--- Rod Hurley <rhurley at tmvgas.com> wrote:
> I second the power supply notion.  Especially since a power supply is
> very inexpensive and easy to replace. 
> 
> >>> bbrush at unlnotes.unl.edu 02/25/04 08:56AM >>>
> 
> This is just kind of an expansion on why I think it's the power
> supply.
> 
> Although most people aren't aware of it, power supplies are fairly
> sophisticated.  There is a circuit in them (called the power good
> circuit)
> which monitors the 5V output.  As long as the output is within
> tolerance
> (which is fairly tight) everything is fine.  If the output falls out
> of
> tolerance the power good circuit shuts off all output.  This prevents
> the
> PS from ruining equipment by supplying too much or too little voltage.
> 
> In your case it's entirely possible that the PS is borderline and on
> some
> boots it gets the output within tolerance and some it doesn't.  The
> capacitors and inductors in the PS do degrade over time, and in
> commercial
> supplies they aren't the highest quality components to start with
> since
> they have an expected service life of 2 to 3 years.
> 
> Bill
> 
> olug-bounces at olug.org wrote on 02/23/2004 11:11:59 PM:
> 
> > Well, swapping out the memory didn't help.
> >
> > I've considered the power supply, but I (irrationally?) deduced
> thatif
> there's
> > any kind of power to the system, then the power supply must be
> alright.
> > Obviously, Bill, you think otherwise.  I have a spare power supply
> > so I'll give
> > that a go.
> >
> 
> 
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