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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