VOGONS


How to remove cpu?

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First post, by AMDMania

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Hi did a search and couldn't find what I'm looking for. I want to remove this 486 chip from the motherboard but I don't know what's holding it in. I'm going to be replacing the board with a 386mobo and processor and co-pro, and I guess I'm wondering when I get to that step, what holds the cpu in the socket?

Thanks

Reply 1 of 11, by imi

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AMDMania wrote on 2021-01-22, 22:05:

what holds the cpu in the socket?

friction ^^

you can use a chip puller or something similar and carefully lever the CPU out of the socket.

Reply 2 of 11, by waterbeesje

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This one is just held by the socket.
It's a lif socket: low insertion force
The socket 3 with the lever is a zif: zero insertion force.

Gently lift it up with a plastic tool, a millimetre a time, every lift a different side.

I don't recommend my usual method: put a screwdriver in between the socket and the CPU and rotate the screwdriver. It may damage the CPU.

Stuck at 10MHz...

Reply 3 of 11, by bofh.fromhell

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Something like this:
800px-Intel_CPU_removal_tool.jpg

The CPU is pressed into the holes in the socket.
Think its called LIF, as in Low Insertion Force.
So it shouldnt take much force, tho if its been in there for a long time it might need some persuasion =)

Reply 4 of 11, by AMDMania

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Ok thanks, I've ordered a plastic screw driver set. Could not find the cpu tool on ebay.

And is Mr. Bios worth keeping? The motherboard has extensive battery corrosion, so I'm tossing it.

Reply 5 of 11, by Horun

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bofh.fromhell wrote on 2021-01-22, 22:14:
Something like this: https://www.vogonswiki.com/images/thumb/1/14/Intel_CPU_removal_tool.jpg/800px-Intel_CPU_removal_tool.jpg […]
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Something like this:
800px-Intel_CPU_removal_tool.jpg

The CPU is pressed into the holes in the socket.
Think its called LIF, as in Low Insertion Force.
So it shouldnt take much force, tho if its been in there for a long time it might need some persuasion =)

Yes !! I have one too. Got it from HP/C in about 1995 or there about.

Hate posting a reply and then have to edit it because it made no sense 😁 First computer was an IBM 3270 workstation with CGA monitor. Stuff: https://archive.org/details/@horun

Reply 6 of 11, by Vynix

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AMDMania wrote on 2021-01-22, 23:26:

Ok thanks, I've ordered a plastic screw driver set. Could not find the cpu tool on ebay.

And is Mr. Bios worth keeping? The motherboard has extensive battery corrosion, so I'm tossing it.

Yes. There's a topic in the software section that has a list of all dumped MRBioses. There's a lot of MRBioses that weren't dumped

Proud owner of a Shuttle HOT-555A 430VX motherboard and two wonderful retro laptops, namely a Compaq Armada 1700 [nonfunctional] and a HP Omnibook XE3-GC [fully working :p]

Reply 7 of 11, by Warlord

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table knife 🤣 gently lift each side, until you can pull it strait off.

Reply 8 of 11, by chrismeyer6

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I've used a plastic spackle knife and that worked really well and there super cheap.

Reply 10 of 11, by Caluser2000

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I just use the short end of a isa slot cover blank. Easy. as...

There's a glitch in the matrix.
A founding member of the 286 appreciation society.
Apparently 32-bit is dead and nobody likes P4s.
Of course, as always, I'm open to correction...😉

Reply 11 of 11, by Baoran

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I have just used tiny screwdriver and lift each corner of the cpu in turn. I have never felt like there has been danger of damaging the cpu even if I have done it probably couple dozen times.