Replacing a PC power supply fan

D

Dan

Guest
Built a multimedia machine about 2 years ago, using a Cool Master 600 watt
PS, the fan in which is beginning to fail (sound/speed goes up & down, even
when run on a bench power supply, turning by hand feels rough, etc.), So I'm
looking at Newegg for a replacement 120 x 120 x 25mm fan. Cheap enough, but
I don't want to get too much airflow, for noise if nothing else. CFM ratings
range from about 20 to about 120. What would be an appropriate CFM rating
for a replacement PS fan? These are case fans, which means I'm going to have
to solder on the existing internal PS connector, so I suppose I could stick
a resistor in series to lower the speed a tad...

TIA

Dan
 
"Jim Adney" <jadney@vwtype3.org> wrote in message
news:cf9pa4d6kc5rmer7q4e3d3k2ckvhhqne9t@4ax.com...
If you like this fan, did you know that they are fairly easy to take
apart and lubricate. This usually gives them a completely fresh start
and they'll be good for at least as much life as they've seen up to
now.

To take them apart, just remove the sticker from one side of the hub,
then pry out the cap under there. There are different designs beyond
that point, but the whole object is to just remove whatever snap
rings, etc you find and pull it apart. C

Clean up the shaft and put it back together with some fairly heavy oil
(so it doesn't drip out right away.

Works like a charm, takes less time than buying a new one, and costs
next to nothing
Click to expand...
Thanks Jim. That would have been my preference, I looked into the
possibility when I had the fan out. There's nothing under the sticker, no
obvious way to disassemble. The fan seems like it might be glued to the
rotor, pried on in it lightly, but I was afraid of breaking the fan
entirely. At the moment its' running, so I can use the PC until a
replacement arrives. If nothing else, the ton of dust I blew out of the PSU
should aid cooling Plus the case has multiple fans, one of which also
pressurizes the PSU, I think it will hold up until I can get a new fan.
 
"Andy Cuffe" <acuffe@gmail.com> wrote in message
news:qhapa45sbgta0evcnp6lidq0c1qncinr8q@4ax.com...
Depending on who made the old fan, you may be able to find out the
specs from the manufacturer.

The current draw (which should be printed on the fan) will give you an
idea. Try to find a replacement that uses about the same amount of
power, and it should be pretty close to the same CFM and noise.
Andy Cuffe

acuffe@gmail.com
Click to expand...
Good ideas Andy, thanks!
 
"PeterD" <peter2@hipson.net> wrote in message
news:8iqqa49ib3j7380cto0oa0hn9n07tdhc1t@4ax.com...
On Wed, 20 Aug 2008 15:29:01 -0700, "Dan" <none@hotmail.com> wrote:

Built a multimedia machine about 2 years ago, using a Cool Master 600 watt
PS, the fan in which is beginning to fail (sound/speed goes up & down,
even
when run on a bench power supply, turning by hand feels rough, etc.), So
I'm
looking at Newegg for a replacement 120 x 120 x 25mm fan. Cheap enough,

So cost is your deciding factor?

but
I don't want to get too much airflow, for noise if nothing else. CFM
ratings
range from about 20 to about 120. What would be an appropriate CFM rating
for a replacement PS fan?

Not rocket science, the same CFM as the original fan?

These are case fans, which means I'm going to have
to solder on the existing internal PS connector, so I suppose I could
stick
a resistor in series to lower the speed a tad...

Why have a fan at all, then?
Click to expand...
Piss off, asshole
 
On Wed, 20 Aug 2008 15:29:01 -0700 "Dan" <none@hotmail.com> wrote:

Built a multimedia machine about 2 years ago, using a Cool Master 600 watt
PS, the fan in which is beginning to fail (sound/speed goes up & down, even
when run on a bench power supply, turning by hand feels rough, etc.), So I'm
looking at Newegg for a replacement 120 x 120 x 25mm fan. Cheap enough, but
I don't want to get too much airflow, for noise if nothing else. CFM ratings
range from about 20 to about 120. What would be an appropriate CFM rating
for a replacement PS fan? These are case fans, which means I'm going to have
to solder on the existing internal PS connector, so I suppose I could stick
a resistor in series to lower the speed a tad...
Click to expand...
If you like this fan, did you know that they are fairly easy to take
apart and lubricate. This usually gives them a completely fresh start
and they'll be good for at least as much life as they've seen up to
now.

To take them apart, just remove the sticker from one side of the hub,
then pry out the cap under there. There are different designs beyond
that point, but the whole object is to just remove whatever snap
rings, etc you find and pull it apart. C

Clean up the shaft and put it back together with some fairly heavy oil
(so it doesn't drip out right away.

Works like a charm, takes less time than buying a new one, and costs
next to nothing.

-
-----------------------------------------------
Jim Adney jadney@vwtype3.org
Madison, WI 53711 USA
-----------------------------------------------
 
On Wed, 20 Aug 2008 15:29:01 -0700, "Dan" <none@hotmail.com> wrote:

Built a multimedia machine about 2 years ago, using a Cool Master 600 watt
PS, the fan in which is beginning to fail (sound/speed goes up & down, even
when run on a bench power supply, turning by hand feels rough, etc.), So I'm
looking at Newegg for a replacement 120 x 120 x 25mm fan. Cheap enough, but
I don't want to get too much airflow, for noise if nothing else. CFM ratings
range from about 20 to about 120. What would be an appropriate CFM rating
for a replacement PS fan? These are case fans, which means I'm going to have
to solder on the existing internal PS connector, so I suppose I could stick
a resistor in series to lower the speed a tad...

TIA

Dan
Click to expand...
Depending on who made the old fan, you may be able to find out the
specs from the manufacturer.

The current draw (which should be printed on the fan) will give you an
idea. Try to find a replacement that uses about the same amount of
power, and it should be pretty close to the same CFM and noise.
Andy Cuffe

acuffe@gmail.com
 
Jim Adney wrote:
On Wed, 20 Aug 2008 15:29:01 -0700 "Dan" <none@hotmail.com> wrote:

Built a multimedia machine about 2 years ago, using a Cool Master 600 watt
PS, the fan in which is beginning to fail (sound/speed goes up & down, even
when run on a bench power supply, turning by hand feels rough, etc.), So I'm
looking at Newegg for a replacement 120 x 120 x 25mm fan. Cheap enough, but
I don't want to get too much airflow, for noise if nothing else. CFM ratings
range from about 20 to about 120. What would be an appropriate CFM rating
for a replacement PS fan? These are case fans, which means I'm going to have
to solder on the existing internal PS connector, so I suppose I could stick
a resistor in series to lower the speed a tad...

If you like this fan, did you know that they are fairly easy to take
apart and lubricate. This usually gives them a completely fresh start
and they'll be good for at least as much life as they've seen up to
now.

To take them apart, just remove the sticker from one side of the hub,
then pry out the cap under there. There are different designs beyond
that point, but the whole object is to just remove whatever snap
rings, etc you find and pull it apart. C

Clean up the shaft and put it back together with some fairly heavy oil
(so it doesn't drip out right away.

Works like a charm, takes less time than buying a new one, and costs
next to nothing.

-
-----------------------------------------------
Jim Adney jadney@vwtype3.org
Madison, WI 53711 USA
-----------------------------------------------
Click to expand...
I have lubricated many fans in my time and broke a few trying to pop off
the blades. Oil last longer than silicone but attracts more dust.
If you buy a new fan, get a ball bearing fan. 30 to 40 cfm about 6 dollars.
 
On Thu, 21 Aug 2008 10:06:18 -0700, "Dan" <none@hotmail.com> wrote:

"PeterD" <peter2@hipson.net> wrote in message
news:8iqqa49ib3j7380cto0oa0hn9n07tdhc1t@4ax.com...
On Wed, 20 Aug 2008 15:29:01 -0700, "Dan" <none@hotmail.com> wrote:

Built a multimedia machine about 2 years ago, using a Cool Master 600 watt
PS, the fan in which is beginning to fail (sound/speed goes up & down,
even
when run on a bench power supply, turning by hand feels rough, etc.), So
I'm
looking at Newegg for a replacement 120 x 120 x 25mm fan. Cheap enough,

So cost is your deciding factor?

but
I don't want to get too much airflow, for noise if nothing else. CFM
ratings
range from about 20 to about 120. What would be an appropriate CFM rating
for a replacement PS fan?

Not rocket science, the same CFM as the original fan?

These are case fans, which means I'm going to have
to solder on the existing internal PS connector, so I suppose I could
stick
a resistor in series to lower the speed a tad...

Why have a fan at all, then?


Piss off, asshole
Click to expand...
Oohh... I'm impressed. A moron tells me to 'piss off'.
 
On Wed, 20 Aug 2008 16:44:30 -0700 "Dan" <none@hotmail.com> wrote:

Thanks Jim. That would have been my preference, I looked into the
possibility when I had the fan out. There's nothing under the sticker, no
obvious way to disassemble. The fan seems like it might be glued to the
rotor, pried on in it lightly, but I was afraid of breaking the fan
entirely. At the moment its' running, so I can use the PC until a
replacement arrives.
Click to expand...
Fair enough. I've never seen one I couldn't get apart, so once your
replacement arrives you might just go ahead and pry harder. I can
imagine an assembly method whereby the fan and hub cover are snapped
(or glued, as you say) over the motor after the motor is assembled
onto the shaft. Things like this are often easy to take apart once you
know the tricks, but learning the tricks often requires one
sacrificial victum.

Let us know what you find.

-
-----------------------------------------------
Jim Adney jadney@vwtype3.org
Madison, WI 53711 USA
-----------------------------------------------
 
On Wed, 20 Aug 2008 15:29:01 -0700, "Dan" <none@hotmail.com> wrote:

Built a multimedia machine about 2 years ago, using a Cool Master 600 watt
PS, the fan in which is beginning to fail (sound/speed goes up & down, even
when run on a bench power supply, turning by hand feels rough, etc.), So I'm
looking at Newegg for a replacement 120 x 120 x 25mm fan. Cheap enough,
Click to expand...
So cost is your deciding factor?

but
I don't want to get too much airflow, for noise if nothing else. CFM ratings
range from about 20 to about 120. What would be an appropriate CFM rating
for a replacement PS fan?
Click to expand...
Not rocket science, the same CFM as the original fan?

These are case fans, which means I'm going to have
to solder on the existing internal PS connector, so I suppose I could stick
a resistor in series to lower the speed a tad...
Click to expand...
Why have a fan at all, then?
 
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