CPU pin repair of an Intel 486DX-50 \ VOGONS

CPU pin repair of an Intel 486DX-50

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First post, by Kahenraz

Posted on 2021-09-11, 14:10

Kahenraz Offline

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I bought a collection of CPUs from eBay and all of them had bent pins, some quote severe. I was able to bend most of them back using a mechanical pencil and a lot of patience but the very worst was a 486DX-50. I do not have a photo of it but one of the pins was completely folded over at almost 90 degrees!

I was able to straighten all but two pins which snapped off at the base. The CPU otherwise looked fine and the break was clean so I decided to try and repair it.

Unfortunately, I do not have a 486 to test it in but I suspect that it will work just fine since the damage was purely mechanical.

I dare say that the repair job is stronger than any of the original pins.

Here are the results.

Last edited by Kahenraz on 2021-09-11, 14:54. Edited 9 times in total.

Reply 1 of 5, by Sphere478

Posted on 2022-08-29, 03:14

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Some flux and hot air might be able to level that off a little. 😀

Good job.

Btw, if you wanna know what those pins do

Here is a datasheet for a similar model
https://www.digikey.ch/htmldatasheets/product … -datasheet.html

Sphere's PCB projects.
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Reply 2 of 5, by Kahenraz

Posted on 2022-08-29, 03:33

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I don't think you realize how hard it was to get these to stick, as there is no good way to hold the tiny pin, an iron, and solder at the same time. There is also the risk of dropping the pin into the ether and losing it forever. This is definitely good enough and is NOT something I'm worried about looking pretty.

Last edited by Kahenraz on 2024-03-01, 21:37. Edited 1 time in total.

Reply 3 of 5, by Horun

Posted on 2022-08-29, 03:42

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Good job ! Hope it works !

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 4 of 5, by rasz_pl

Posted on 2022-08-29, 17:02

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Kahenraz wrote on 2022-08-29, 03:33:

there is no good way to hold the tiny pin, an iron, and solder at the same time.

wise/double sided tape, third hand and a fat hypodermic needle (they come in sizes up to ~4mm)
but it would just be chasing aesthetics, if it works it works

Open Source AT&T Globalyst/NCR/FIC 486-GAC-2 proprietary Cache Module reproduction