Non-Chemical stuck heatsink on processor

[sh3030]

I have a problem with a couple processors sticking/bonding to the heatsinks.

Simply prying with a screwdriver proves pointless. Any suggestions. see pics

thanks

 

[Barren Realms 007]

Put the flat balde screw driver between the CPU & heat sink and keep hitting the screw driver with a hammer till they pry apart, you might end up breaking up but that will not hurt anything just watch where your pieces go.

 

[goldsilverpro]

I've always said that, when you take things apart for refining, pretty doesn't count (usually). It often pays to use a bigger hammer. Is that epoxy (probably heat conductive) holding the ceramic to the Al? Maybe heating it on a hotplate to about 700-800F would weaken the epoxy and make the parts separate easier. Maybe a thin chisel will work.

 

[glorycloud]

Go to Goodwill and buy a hair dryer. I have taken off 100's of
heat sinks with my $2.00 hair dryer. 8)

I typically count to 30 while I blow hot air on the heat sink and then give
it a nudge to see if it will come off. It works!

 

[Barren Realms 007]

A hair dryer, and I thought I was cheap. 8)
That is $2.00 well spent.

 

[Irons]

There's always the Propane Torch.

Heat Sinks work both ways.

 

[silversaddle1]

Heat? Are you guys kidding me? That heat don't come free. :lol:

Get yourself an old wood chisel and a hammer. Stand the cpu on edge, put chisel in groove, hit.

Simple as pie and works every time.

Never underestimate the value of a 3/4" wood chisel for scrapping computers. It's one of my main tools on the bench. I just bought a cheap one from true-value. It's been going strong for about 5 years now. Yes, you do have to sharpen it now and then, but it's a very effective tool. You'd be suprised to find out how fast you can remove items off a PCB with a wood chisel.

 

[glorycloud]

Mr. Hair Dryer is best suited for removing heat sinks from good processors
on cold motherboards that I want to resell. Mr. Wood Chisel isn't very
friendy and he negatively impacts (pun intended) the resale value
of the my processors. :lol:

 

[lazersteve]

I've always went with the MAPP torch to remove the heat sinks.

I figure since I'm already removing the bottom lid and any piggy back components with the torch, I might as well remove everything else that will come off with heat while the cpu is hot.

Steve

 

[Irons]

I've always went with the MAPP torch to remove the heat sinks.

I figure since I'm already removing the bottom lid and any piggy back components with the torch, I might as well remove everything else that will come off with heat while the cpu is hot.

Steve

Steve,

It would be useful to find what the average Pd yield from the capacitors on the CPUs is. Good idea to process them separately.

 

[lazersteve]

I've already saved up quite a few of them Irons, yet another project for another day...

Steve

 

[joem]

If the fan is screwed removed screws
a flat screw driver and a tap works for me
but looking at the date of the first post you probably already know it

 

[golddigger2]

I Use a paint stripping heat gun. It works great