[vox-tech] power supply question

[Peter Jay Salzman]

i built this system myself, so there is no warrantee, i'm afraid.

as for voiding the non-existant warrantee, i've already voided it.  the
power supply is laying open on my table.  :)

i'm going to fry's tomorrow to pick up a new fan *and* power supply.  if
swapping fans works, i'll return the supply.

this system is only about a year old.  this sucks!

pete



begin Marc Hasbrouck <m_hasbrouck@yahoo.com> 
> Unless you're bad at soldering, replacing the fan can
> be fairly easy. It does involve opening the power
> supply and voiding the warranty. Is the p/s under
> warranty?
> 
> Marc
> 
> --- Samuel Merritt <snmerritt@ucdavis.edu> wrote:
> > On Fri, May 10, 2002 at 05:56:14PM -0700, Peter Jay
> > Salzman wrote:
> > > power supply fans generally stay on 24/7.  right?
> > > 
> > > i have a power supply fan which turns on for the
> > first second or two of
> > > powering up, then it comes to a stop (but in such
> > a way that makes it
> > > look like it wants to turn; it dances a bit).
> > > 
> > > if you leave it on for awhile, it'll start
> > spinning again (with an
> > > audible click.  sounds like a switch or relay) but
> > only for a few
> > > minutes.  it'll stop again.  and eventually start
> > up again.
> > > 
> > > when you power the system off, it rotates a few
> > times before coming to a
> > > halt.
> > > 
> > > 
> > > the fan rotates freely when the power is off.
> > > 
> > > any ideas?   (aside from buying a new supply).
> > 
> > Sounds to me like you have a variable-speed fan,
> > probably 
> > temperature-controlled, so that it tries to run as
> > slowly as possible 
> > while still keeping the power supply cool.
> > 
> > My guess is that the fan's bearings are starting to
> > go out, so when it 
> > tries to go at one of its slower speeds, you get the
> > dancing. Then, the 
> > power supply heats up, so it goes to a fast speed,
> > and starts running 
> > again, cools the supply, and we start the whole
> > cycle over again. 
> > 
> > You can often replace just the power-supply fan
> > without replacing the old 
> > supply. They're standard 80mm fans; the only hassle
> > might be cutting the 
> > old power leads and soldering new ones on. 
> > 
> > -- 
> > Samuel Merritt
> > PGP key is at
> > http://wwwcsif.cs.ucdavis.edu/~merritt/snmerritt.asc
> > Information about PGP can be found at
> > http://www.mindspring.com/~aegreene/pgp/
> > 
> 
> > ATTACHMENT part 2 application/pgp-signature 
> 
> 
> 
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