Re: More Loud Fans

In article <23dhn2d84sfn5p8melcejohh73c1u8ioje@xxxxxxx>,
Margie <nomoremargiesjunk@xxxxxxxxxxxxx> wrote:
Well, I think I've isolated the sound to the power supply fan, and I
can only describe the sound as "revving." It *looks* like it's
spinning at a constant speed, but when you listen, it revs faster,
slower, faster,,, louder, softer, louder. I don't know of a fan that
doesn't run at a constant speed, but this one sure sounds like it is
changing speeds. Don't know if that's normal (and just loud) or a
sign of an impending problem.

From this distance (!) sounds a lot like the fan bearing. They often
fail in this buzzing kind of mode and they speed up and slow down in
a rhythmic fashion. Replacing the fan should do the trick.

Sometimes you can kind fix them. Pull the fan out and look to see
how the shaft is covered up. Lots of times it's just a sticker over the
hole. If you can get that off a FEW drops (maybe just one) of oil on
the bearing (sewing machine or 3in1) will often help.

I had a fan in an old HP ascii terminal that would do the bearing thing
every now and then. I had a spare fan and would swap it out and then oil
the old one. Swap that one in the next year it did it...

YMMV,

Bob

--
---------------------------------------------------------------------_------
|Bob Rahe, MIEEE, bob@xxxxxxxx (RWR50) / ASCII ribbon campaign ( ) |
|Delaware Technical & Community College / - against HTML email X |
|Computer Center, Dover, Delaware / & vCards / \ |
----------------------------------------------------------------------------

--
Posted via a free Usenet account from http://www.teranews.com

.

Relevant Pages

  • Re: More Loud Fans
    ... spinning at a constant speed, but when you listen, it revs faster, ... slower, faster,,, louder, softer, louder. ... Many computers have temperature sensors on the motherboard and the fan speed ... different speeds depending on the temperature of the motherboard and/or ...
    (sci.med.transcription)
  • Re: Why so much HD activity?
    ... If it's something loose find out what and tighten it. ... alter the RPM of the fan so it's no ... >>>longer in resonance with the case, or add some mass and damping to the ... But how about bearing failure or dust ...
    (comp.sys.ibm.pc.hardware.storage)
  • Re: Why so much HD activity?
    ... >Terry Pinnell wrote: ... But how about bearing failure or dust ... As you saw from my photo, there's a fair amount of dust ... >> inside the fan. ...
    (comp.sys.ibm.pc.hardware.storage)
  • LOUD Fan in Dell 8400
    ... error message from the system saying that the system battery was low ... the noise from the fan kept getting louder and louder until ... screen error a couple of times since I bought this machine in 2005. ...
    (alt.sys.pc-clone.dell)
  • Re: LOUD Fan in Dell 8400
    ... power button, I accidentally pushed it without holding it down. ... the noise from the fan kept getting louder and louder until ... screen error a couple of times since I bought this machine in 2005. ...
    (alt.sys.pc-clone.dell)