[muckmail]

Removing a Heat Sink Form A pentium 4 chip?

I pulled a pentium 4 chip form a computer to move to another computer. Win I did
that I found that the chip came out of the socket attached to the heat sink.
It there a way to remove the top of the chip from the heat sink without damaging
the processor? The processor seems to be attached with some black glue that
has dryed. The process is tightly attached to the sink and I don't want to pry on it?


If the chip cant be remove I will not be able to put it into any computer because
of motherboard levers.

Thank you,

[Frank4d]

You could put it in a 160-170 degree Farenheit oven for 15 minutes or so... if you have an oven that can be adjusted that low. Remove it from the oven and immediately try to separate the CPU from the heatsink. I would not try this above 170 degrees though.

[muckmail]

The kitchen oven will go to 170 degree. So let the oven heat up to 170 degree then
put the heat sink & processor in it for 15 min. Bring it out and try to pry it out when
hot. I guess I will have to get some heat gloves to hand the hot sink. I think I might
try that if there is no better suggestions.

Thank you,

[Jack Hackett]

A quick sharp tap with a screwdriver often does the trick and does no harm to the CPU either
Stand the CPU/Heastink on its side, place thinnish screwdriver between the two so that the blade rests on the metal part of the CPU and give the top of the screwdriver a quick tap with the handle of another screw driver, nothing too heavy.

[Frank4d]

I would not do that because some CPUs don't have metal lids. Could end up putting a screwdriver through the chip.

[muckmail]

I think I am going to try the oven ideal some tomarrow. If I get the chip saparated,
how would I clean up the black glue residue for new installion. I will let you know if
I have any luck with my oven tomarrow. Any hints for this operation would help.

[Frank4d]

Get some 90% pure (or as best as you can find) isopropyl alcohol and cotton swabs to clean off the black goo.

I have done basically the same thing using a hair dryer but it doesn't heat evenly and the temperature isn't controlled. Don't forget something to prevent burning your fingers.

[Jack Hackett]

Originally Posted by Frank4d

I would not do that because some CPUs don't have metal lids.

P4s do, quite thick ones too

[replay]

hairdryer on the hot setting........ then gently twist processor from side to side

[muckmail]

I used the oven Ideal and it worked. I still have some remaining black reidue partially
on top of the chip. The chip is cooled off by now. Should I try to remove the black
residue off the top of the chip. A friend gave me a tube of white heat sink lube
that I was planning on putting a drop on top of the chip for a new heat sink mount.

Thank you,

[Frank4d]

You should remove the leftover black residue from both the CPU and heatsink. Isopropyl alcohol works for this.

Acetone, denatured alcohol and carburetor cleaner also work but will damage any plastic they touch.

[muckmail]

Problem is solved but how much of the white heat sink lube should I place on top of the process to
get a good heat sink. Will a couple of drops do?
Thank you

[Frank4d]

Use a ball of heatsink compound about 1/8 inch diameter placed in the center of the CPU. The heatsink will spread it out.

[muckmail]

Post Solved
Thank you