How do I test dock connector?

My iPhone 4 just gave up the ghost. I went for a sweaty run here in Liberia. When I returned, I tried to update Runkeeper. IPhone froze on the app. I tried to power it off and the circling white thing popped up. When it refused to shut down, I hard reset it and it went to the black lit screen with nothing on it mode until I assume the battery died. Now nothing happens - can't charge, nothing on screen, kaput. I cleaned the dock connector to no avail. Should I just assume that the dock connector is the culprit? Is there a way to test it? At most a drop or two of sweat got into it. The case I use for running does not let it steam up (at least visibly) like others I've had but Monrovia is the most humid and salty place I've ever lived so perhaps there is more damage inside. In any event, I need to have parts hand carried from the US so any pointers people can recommend would be appreciated.

Best,

Rich