Ikke wrote:
> Hi everybody,
>
> Today I wanted to add another harddrive to my computer, and decided to
> blow out the accumulated dust inside the computer at the same time.
>
> After opening the case, I noticed there was a lot of dust under the CPU
> fan, in between the blades of the heatsink. There's a bracket, keeping
> the fan on top of the heatsink (or so I thought) so I removed it... and
> removed ventilator, heatsink and CPU in one go. Before I knew it, I was
> holding the entire block in my hands.
>
> The problem is: I don't know how to place the CPU back on it's socket!
>
> The socket has a handle, which you open to place a new CPU, then close,
> after which you can add the heatsink etc... But at this time, the
> heatsink is already on the CPU, and I can't open the handle (or leave it
> open) with the heatsink on top, so I can't put in the CPU.
>
> I tried pushing a little bit harder, but decided not to use too much
> force - if it doesn't move easily, I'll probably break it by using too
> much force.
>
> You can see my problem on the following page:
> http://www.intel.com/support/processors/celeron/sb/cs-
> 017348.htm#Installation
>
> It's not the same processor, but the socket is exactly the same, and the
> entire assembly in figure 10 is exactly the same as well.
>
> By now I'm guessing I need to:
> - remove the heatsink from the CPU
> - put the CPU back in it's socket (like you do in a new installation)
> - reattach the heatsink with new thermal grease
> - never touch those brackets again...
>
> Or is there another way to reattach my CPU?
It appears someone installed an oversized HSF (heatsink+fan) in place of
the stock HSF (if it was a retail CPU purchase versus an OEM purchase
where the buyer had to get a separate HSF). If the ZIF arm cannot be
moved now that the assembly is out of the socket then just how did you
get it out in the first place? A ZIF socket grabs onto the pins by
friction but it requires some decent force to overcome that friction on
all those pins to yank the CPU out without raising the ZIF retainer arm.
Don't be so forceful when demolishing, er, dismantling electronics.
So have you been applying anti-static measures when putzing around
inside your computer case and while handling the fan+HSF+CPU assembly?
I suspect not.
If the prior user/jobber used thermal adhesive (glue) then you will have
a very hard time separating the heatsink from the CPU without damaging
the CPU's cover plate, and then you'll have a tough time removing the
glue residue. See
http://en.wikipedia.org/wiki/Thermal_adhesive. It
shouldn't be used for a HSF on a CPU.
If the prior user/jobber used thermal pads, they're like double-sided
sticky tape. Use a safety razor blade to slide through the foam (which
gets squashed when the heatsink is pressured onto the CPU cover plate).
Then use the blade to scrape off the residue. I haven't used these
cheap but easy-to-use-for-end-users thermal pads so I'm not sure if a
particular solvent helps remove the residue. Don't use GooGone or
Orange Clean since those are citrus based and leave behind oils that you
have to clean off very thoroughly. Something like GoofOff (xylene) or
acetone might work. Because these attacks various plastics, don't
splash it on. Use a wetted cotton swab (paper stem, not plastic) to
apply an amount needed to dissolve what you are working on. Some
suggest using a (old and unwanted) credit card or other stiff plastic
but obviously not a good idea if they are attacked by the solvent you
are using. Maybe even rubbing with your fingers could roll off the
thermal pad remnants. Whatever you use, follow with isopropyl alcohol
(not rubbing, wood, or methyl alcohol that leave their own residue) to
complete the cleanup. In fact, before using the hard solvents, just see
if isopropyl alcohol will work to soften and remove the old thermal
paste or pad. Lots of CPUs come with the thermal pad pre-installed.
It's not a great choice but okay if you're not overclocking or a fanatic
looking for lowest operating temperatures despite the actual much higher
operating temperature range for the device. See
http://en.wikipedia.org/wiki/Thermal_pad_(computing).
If its cheap-grade thermal paste (grease), it might've dried out and act
like glue. It will be hard to pry apart and scrape off. The safety
blade, blade from a utility knife, or shoving in a credit card might
help break up the old dried grease. Afterward, clean and use a decent
thermal paste. Did you get any for the reassembly?
http://www.youtube.com/results?searc...Bheatsink&aq=f
An air duster would've eliminated the dust that accumulated on the fins
of the heatsink along with any dust bunnies under the fan blades and
atop the heatsink. If you're talking about the dust stuck to the fan
blades themselves then you use cotton ear swabs to wipe both sides of
the blades to remove and loosen the dust to then blow off the remainder.
There was no reason for you to remove the fan, heatsink, and CPU to dust
them. If the dust couldn't be blown out from the heatsink (normally the
only method that should be used) then you have a problem in your
household, like you smoke and the sticky residue from your smoke gets
onto everything: in your hair, on your teeth, in your clothes, on your
keyboard, inside your monitor, and inside the CPU case. That **** acts
like glue and you'll have to use solvent to get it off. An air duster
won't work. Another reason to stop the filthy habit. Of course, maybe
you're a hair fanatic and load on gobs of hairspray with the overspray
sticking everywhere else. Think about your environment and why that
dust simply won't blow off with an air can. Of course, it isn't just
the CPU's heatsink that has that dust stuck on with some gooey residue.
It's on your motherboard, RAM sticks, and everywhere else. Dust is a
thermal insulator which means heat won't pass through it well and all
your components are running hotter.
Start investigating why that dust got stuck and won't blow off. It will
coat more than just the HSF inside your computer case.
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