The circuit board looks fine though, the weird stippling you see on it is just how the green 'paint' layer was applied (or dried) when it was manufactured.
I know a thing or two about PCBs and it's definitely some kind of damage, salt water probably. The actual texture doesn't come out very good in the pictures.
Originally Posted by Rik
Did you remove the speaker to see if there's markings on the chip on that side?
I did not, but looking under it sideways just reveals a convex epoxy shape with no visible markings.
If there aren't any other takers, I'll ship it off to Sean.
