[sdiy] strange analog problem (mixer console)

[Ken Stone]

>I have no idea why a bad solder joint can be made conductive again for 
>a while with a higher voltage or current. Anyone?
>
>Ingo

perhaps it was a mechanical thing. By turning up the volume, you either
directly applied stress to the board, or the increased volume shook it :)

I'm sure there are chemical explanations that would be equally valid, like
overcoming a threshold with schmitt behavior.

Ken 
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