Yuki,
You need not worry about anything getting to cold when blasting with
compressed air.
Infact, It is a common diagnostic tool when there are problems in
electronic systems.
I have used freeze spray on electronic components to lower the temp so
much that the
chip in question is super cold [Sub zero] (You can disable IC's by
freezing them when doing
electronics diagnostics.) The chip will resume normal operation when it
warms up again.
The only thing to be aware of is condesation when freezing chips (With
freeze spray).
But I doubt compressed air would ever get as cold as freeze spray, So
you shouldn't have to
worry about condesation when using compressed air.
So Blast away with compressed air to your hearts content.
ATB
Michael.
Yuki Taga wrote:
>
> Hi Keith,
>
> Anybody know how to get a P4 fan/heatsink off?
>
> I put it on (I built the box), and of course I'm aware of the two
> primary levers that release it, but it's a partial release, not a
> complete one, and I can't remember exactly how to get that thing off,
> and I'm not into yanking stuff off the MB. ^_^
>
> With a flashlight, I can see some accumulation between the fins of
> the heat sink (beyond the fan) that have to be taken care of. What
> has happened is that some dust has actually formed a curtain over the
> top of some of the fins, which of course is really cutting down on
> the airflow. I used a toothpick to gently dislodge some of it, and
> then vacuumed. But I think a more thorough job is called for. There
> are no more curtains, but I can see dust.
>
> I have been remiss about keeping my eye on the CPU temp. It's always
> run a bit on the hot side (mid 40s), and lately it's been sneaking
> higher, and I haven't paid enough attention to it. This little bit
> of cleaning I did dropped the temp SIX DEGREES C, so no minor deal.
>
> There are AB routines that will take the temp up 20 from its ambient,
> so I need to be more careful. The only thing I've got monitoring it
> is the old Motherboard Monitor, which is not supported any longer. It
> gives me board and CPU temps, however.
>
> So a key question for me at this point would be, does a CPU just go,
> or does it degrade, giving intermittent problems, because of long
> term overheating? Given what I saw under the flashlight, I've been
> slowly cooking this, and if a CPU degrades, rather than just fails,
> that is most likely the seat of the problem.
>
> It isn't like I never clean the box, either. And I've put a vacuum
> on that CPU fan before. I've always been tentative about that
> however, because it actually reverses the fan blade action from it's
> normal direction, which is to suck air in over the fins. I've also
> blown compressed air in there, but tentatively there, too, because
> compressed air can get pretty cold in a hurry (at least the can
> does), and I don't know just what damage I might be doing along with
> the good. Without a flashlight, it just wasn't too obvious what was
> building up in there that the vacuum could not pull out. Once
> dislodged though, a lot of stuff came out. But there is more dust in
> there.
>
> Maybe I'm better off replacing the CPU, which would have to be pretty
> cheap now, if I could even find one (P4 2.53 GHz).
>
> Thanks all,
>
> Yuki
>
> Saturday, September 16, 2006, 3:28:59 PM, you wrote:
>
> KM> Like Rik, I too have had CPU overheating problems. I have a small
> KM> utility that came with my computer that shows and records
> temperatures.
> KM> If you have such, give it a try. Recently I fixed my problems
> (computer
> KM> shutting down completely during evening virus scans), by cleaning the
> KM> heat sink and fan. I also used new grease between the fan and cpu, but
> KM> only because I had to remove the fan in order to get two years of dust
> KM> bunnies out of it.
>
> KM> BTW, right now I have my "red line" set for 70 C. Normally the CPU
> runs
> KM> at 40 C, but during 1 hour full virus scan it gets up to 55 C.
>
> KM> Hope this helps.
> KM> -- Keith
>
> KM> Rik Rasmussen wrote:
> >>
> >> I have had two pc's running XP develop problems that ended up being
> >> the fan
> >> on the CPU. In one case it had stopped and the cpu overheated. In the
> >> ohter
> >> case, the fan was apparently running too slow to cool.
> >>
> >> In both cases replacing the cpu fan fixed the problem.
> >>
> >> Rik Rasmussen
> >>
> >>
>
> Best,
>
> Yuki
>
>
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