How to fix wet sony a200?

i need help fixing the sony a200 because it got wet with sea salt (and that is worst) and i did the wrong mistake of trying to turn it on. and now it doesn't turn on and i already leaved in ziplocks bags with lots of silica bags in it for 2 days and it doesn't turn on. and i dont know what to do and in 2 weeks is my graduation and i dont have a camera for pictures. can someone help me if there is a way to fix the camera? please.