In article
<471051c6$0$23816$5a62ac22@[EMAIL PROTECTED]
>,
Andy <nospam@[EMAIL PROTECTED]
> wrote:
> The New Guy wrote:
> >> Well...to update...they're in.
> >> It's made _some_ difference, but I think I'm going to have to solder
a
> >> resistor in there somewhere to slow them down a touch.
> >
> > Andy, try not to cut off the previous posts that are obviously
> > relevant.
>
>
> Err...right. Considering none of the replies were really relevant,
> that's why I started fresh. Some call it 'netiquette'.
>
>
> > But I'm going to guess that you replaced a fan and now its
> > still loud.
>
>
> It was somewhat quieter, but not dramatically so. With the resistors in
> place it's a lot quieter. Still a bit of whine though, some of which is
> coming from the hard drive as it turns out.
>
>
> > Look at the mounting points and see if you feel any
> > vibration. If so, try mounting on rubber or nylon washers.
>
>
> That's the next step.
>
>
> > But the
> > real solution for noise with most computers and power supplies is to
> > simply remove the power supply completely from the box,
>
>
> Not really a solution I'm prepared to attempt.
>
> > then turn the
> > 80 mm fan around so its blowing in, not out. Then power it from the
> > red and black wires (which will give 5 volts), not the yellow and
> > black wires which give 12 volts.
>
>
> ?? The power supply in question runs 2 60mm fans side by side, which
> blow air into the front of the power supply. There are no 'wires' to
> choose from, merely 2 prong connectors that moulded plastic connectors
> slide onto.
>
>
> > It will run at a much slower speed
> > but since you're using cooler external, room temperature air to cool
> > the power supply heatsink, you don't need to run it at the higher rpm
> > speed from 12 volts. It will be almost inaudible. WAY quieter than
> > at 12 volts.
>
>
> I can only assume you've not looked inside a MDD PowerMac.
>
>
> > If that model uses the big 5" fan on the side wall, disable it.
>
>
> See above.
>
>
> Its
> > noisy and useless. Then get an 80 mm or larger fan (whatever size is
> > necessary to cover the CPU heatsink, and run it at 5 volts (red and
> > black wires. To keep the case from heating up, just leave it ajar
> > about an inch. The heat will escape easily. But watch for dust. It
> > might be wise to place it under a shelf as long as there's good
> > ventilation.
>
>
> No offense, but that sounds like an utterly ****house solution. The CPU
> heatsink has a 120mm fan (next on the replacement list) which has it's
> speed controlled by a temperature sensor.
>
>
>
> Andy.
As you wish. I've done it and it results in a near silent system
running much cooler.
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