Re: Blast From Past - IBM 670 Mag Drum Computer

Subject	Re: Blast From Past - IBM 670 Mag Drum Computer
Newsgroups	comp.os.linux.misc
References	(3 earlier) <vNWdnfCkkbY9X_X1nZ2dnZfqnPudnZ2d@giganews.com> <tN9aQ.36360$V4j4.27196@fx46.iad> <20250707090941.00000774@gmail.com> <qRucnWIbALYD3PH1nZ2dnZfqn_WdnZ2d@giganews.com> <md3hmfFuf5mU2@mid.individual.net>
From	c186282 <c186282@nnada.net>
Date	2025-07-08 22:36 -0400
Message-ID	<daKcnZ-s7LctSPD1nZ2dnZfqnPSdnZ2d@giganews.com> (permalink)

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On 7/7/25 11:30 PM, rbowman wrote:
> On Mon, 7 Jul 2025 17:52:40 -0400, c186282 wrote:
> 
>>     Ordinary oxidation of the pins and sockets, especially with
>>     hot-running chips, can become a big problem too, even more in a humid
>>     environment. Used to have a couple of the old full-size IBM-PC boards
>>     full of DRAM chips. About twice a year they'd get flakey. Had to kind
>>     pry up rows of chips and jam them back in again - which broke the
>>     oxidation layer. Gold-plated pins and sockets are worth the extra few
>>     cents.
> 
> Shades of the Pink Pearl solution!

   Hey, that's the way it was ! The old 'tin' on 'tin'
   contacts would build up oxidation. Usually didn't
   have to pry the chips completely out, just 'disturb'
   them a bit.

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Blast From Past - IBM 670 Mag Drum Computer c186282 <c186282@nnada.net> - 2025-07-02 23:30 -0400
  Re: Blast From Past - IBM 670 Mag Drum Computer Allodoxaphobia <trepidation@example.net> - 2025-07-03 12:03 +0000
    Re: Blast From Past - IBM 670 Mag Drum Computer rbowman <bowman@montana.com> - 2025-07-03 18:43 +0000
      Re: Blast From Past - IBM 670 Mag Drum Computer c186282 <c186282@nnada.net> - 2025-07-05 02:14 -0400
        Re: Blast From Past - IBM 670 Mag Drum Computer Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2025-07-05 13:30 +0000
          Re: Blast From Past - IBM 670 Mag Drum Computer rbowman <bowman@montana.com> - 2025-07-05 18:05 +0000
          Re: Blast From Past - IBM 670 Mag Drum Computer Bobbie Sellers <bliss-sf4ever@dslextreme.com> - 2025-07-05 13:25 -0700
          Re: Blast From Past - IBM 670 Mag Drum Computer Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-07-06 00:20 +0000
            Re: Blast From Past - IBM 670 Mag Drum Computer rbowman <bowman@montana.com> - 2025-07-06 03:38 +0000
          Re: Blast From Past - IBM 670 Mag Drum Computer John Ames <commodorejohn@gmail.com> - 2025-07-07 09:09 -0700
            Re: Blast From Past - IBM 670 Mag Drum Computer c186282 <c186282@nnada.net> - 2025-07-07 17:52 -0400
              Re: Blast From Past - IBM 670 Mag Drum Computer rbowman <bowman@montana.com> - 2025-07-08 03:30 +0000
                Re: Blast From Past - IBM 670 Mag Drum Computer c186282 <c186282@nnada.net> - 2025-07-08 01:55 -0400
                Re: Blast From Past - IBM 670 Mag Drum Computer c186282 <c186282@nnada.net> - 2025-07-08 22:36 -0400

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