It would have taken ONE sample unit to verify this problem. With a handful of samples they could have also torn at least one down completely to verify against their BOM. Before running 10k.
Really that's not even a mistake a first timer should/would make. They were probably just busy and excited and didn't bother with due diligence.
Not sure what bit of "We received one initial small test batch of boards... they tested fine" and "The first production batch had a different jack in place" you missed?
They did exactly what you say you would have done.
The factory appear to have swapped components between the initial test batch and the production run.
Maybe I should assume you were just a little too busy and excited to fully check the links (which I admit seem to only point to the general vicinity of the relevant comments) before you posted your analysis?
Previous Topic
Index
