6 Nov
2016
6 Nov
'16
10:32 p.m.
On 11/4/16, 7:22 AM, "cctalk on behalf of Paul Koning"
<cctalk-bounces at classiccmp.org on behalf of paulkoning at comcast.net> wrote:
Yes, looking at those pictures that?s rosin.
On Nov 4, 2016, at 9:19 AM, Sam O'nella
<barythrin at gmail.com> wrote:
Out of curiosity and ignorance what's with the solder joints on the
cards in the pictures? That orange color seems like it's everywhere
around cold looking solder joints. Is that rust, some sort or
protection, or acid corrosion?...
> The Altair 8800, a very early one, 4-slot motherboard, 1K ram, ceramic
>CPU,
> you will see: https://goo.gl/photos/3C1pzfwFoZ3koPgt9
I doubt it's any of those. That's the typical look of a board
hand-soldered with conventional rosin core solder. While it's possible
to remove that flux (thought I think the best solvents are non-PC), it is
often omitted and generally not needed.
paul