Hi,
my 3GS felt in the sea last summer (my kids made this miracle
At first it was still working.
3 weeks ago it started not to get charged.
I listened to a friend and threw some clar alcohol in the slot of the charger.
But i threw a lot and destroeyd the screen too !!! (stupid thing to do eh ? yes i did it !!!).
But i bought some parts (i also had a broken back and this was the chance to fix it).
A friend of mine looking at youtube videos and knowing some electronics made it.
The parts cost ~$100 and now i managed to have an (almost) new device
Just sharing my experience
friendly
s