Desolder CPU socket and tools???

[supersabre]

Last week i found 7 dual socket 370 (4 are abit vp6,3 are supermicro)motherboards in the dumpster.

However the lugs for the socket are all broken, so i can't mount the heatsink on them.

I have lot of junk socket 370 mobo with good sockets.
i have desoldered ps2 port, usb port, vga port,capacitors before, but i don't have experience in desoldering tiny pins for the socket.

Question: What is the best tool for desoldering cpu socket?

[shadow]

Re: Desolder CPU socket and tools???

Hmmm....I am not an electronics expert or anything like some others on this forum.

I would say that you would need a proper de-soldering station. That should be able to suck out the solder from all pins on the CPU socket without too much trouble. It should then be easy to just lift the socket out.

I think a bigger problem will be soldering these pins back on! I would not like to solder 370 pins that are right next to each other using a normal soldering iron! I remember years ago seeing an Infra-red soldering iron in action. That was cool! Soldering small chips is easy with them. Possibly this is something that would be needed to be able to solder something like a CPU socket back on.

I am very confident that a de-soldering station would make easy work out of removing a CPU socket. However I am not exactly sure what would be the ideal tool to solder them back on.

I am sure that others that work is this field would be able to tell you more about this.

[kc8adu]

Re: Desolder CPU socket and tools???

if its just the center lugs get hsf that hooks to the wider ones either side.
the vp6 in this box had both center lugs on both sockets busted.
how the hell the p.o managed to do that is beyond me.
many amd hsf will do the job.shop around a bit.
iirc i got these from xoxide for $10 ea

[Harvey]

Re: Desolder CPU socket and tools???

Its possible - but tricky - to unhook the cover on zif sockets and replace them. Slide a knife blade down the sides and prise the sides open slightly until it unclips. Its not easy but its possible.

If you really need to remove the socket, break the top off and carefully destroy as much of the bottom plastic as you can, then you can get a small pair of pliers or tweezers onto each pin, heat the other side and pull it out. Cleaning the holes is time consuming though.. and you really do wonder if its worth the effort.

I've done it once --- never again

[Rainbow]

Re: Desolder CPU socket and tools???

Yes, the cover can be removed. But that will not help here.

[stretch0069]

Re: Desolder CPU socket and tools???

Due to extreeeeeeeeeme boredom, I started removing a zif socket. The first time, I did it the destructive way as described by Harvey. I got all the pins out and cleaned all the holes. When I put in the new socket and got it all nice and soldered in, it didn't work. Pretty sure it worked prior, just had the lugs broke off. In my case, the shipper beat the hell out of the box. (Thats why whenever I ship computers now, I remove the heatsink.)
For my second attempt, and not quite as bored, I used an old Pace kit....PPS-220 I think. Its what I used when I took miniature component repair some 10 years ago. Anyway, I used the smallest tip I could find in the shop. I started and it was working fine. Got half-way through the job and got bored of being bored. Its a tedious job, but it can be done.

[Lance Thornton]

Re: Desolder CPU socket and tools???

You might want to see if any of them boot by simply trying a cheap cpu, memory and video card before attempting the unthinkable, and as stretch said, booooooring task of desoldering and soldering a socket 370 lug. If none of them boot, at least you haven't lost too much time. Good luck and take pics if you can.

LT

[stretch0069]

Re: Desolder CPU socket and tools???

look at it this way.....about 10 seconds per pin......thats 3700 seconds......62 minutes.....

oooo......that job would require some booze and a couple sittings.

[kc8adu]

Re: Desolder CPU socket and tools???

i cheat.if no parts on the bottom i use a heatgun to pull the old socket and the donor.
a fine tip on my desoldering station makes it easy to clear the holes.
both the vp6 and supermicro mobo's likely need a recap.

[gastorgrab]

Re: Desolder CPU socket and tools???

i cheat.if no parts on the bottom i use a heatgun to pull the old socket and the donor.
a fine tip on my desoldering station makes it easy to clear the holes.
both the vp6 and supermicro mobo's likely need a recap.

Just how much heat will the varnish take? (it's probably an epoxy coating)

I can see advantages and bad disadvantages with doing things that way. I would guess that a lower overall temperature is needed when all the joints are softened at the same time, but won't things on the MB be heated that wouldn't normally be by heating only the exposed area's of the traces?
.

[kc8adu]

Re: Desolder CPU socket and tools???

remember the board was originaly soldered by heating it and all its parts in a vapor phase reflow system.
i have never damaged one doing this.
and i repair industrial stuff that is often irreplaceable or very expensive.
if you want to try it practice on a junker removing the socket for reuse on the boards you want to fix.

[gastorgrab]

Re: Desolder CPU socket and tools???

Are you using a micro heat gun to focus the heat better or a standard sized model?

Not that it wouldn't work it's just that most heat guns i've seen are almost as large as the motherboard. It would seem like your driving in a finishing nail with a sledge hammer.
.

[kc8adu]

Re: Desolder CPU socket and tools???

just a common harbor freight cheapie on low.
just have to get the feel for the distance needed to get enough heat to melt solder and not stress the board.

[gastorgrab]

Re: Desolder CPU socket and tools???

I'll have to try that (on a piece of junk first).


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