[ARC5] 70+ year old errors

[J. Forster]

Bent under leads are very common, both when the chips are soldered in and
when they are soceted. Some socket types are far more prone to this issue.
It rarely happens with cage jack style.

-John

================






[snip]
> I buy boards and assemblies at hamfests to reclaim the parts.
> On one board, an IC pin was bent under the IC from where it was
> inserted on the board.
> The board was wave soldered and had a QA stamp.
> In this case, the IC pin probably was soldered, at one time, but,
> thermal cycling and/or vibration broke the connection.
>
> This QA problem seem to be spread across most companies and is not
> getting any better.
>
> In the first two cases above, both pieces of equipment probably
> passed final, functional, testing.
> The both probably worked until vibration, thermal cycling and
> corrosion cased the connection to go Hi Z.
>
> I would think that anyone that has repaired equipment has a story or
> two about defects from the factory.
>
> 73
> Glenn
> WB4UIV
>
>
>
>
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