Hi, I got a Canon SD600 off of somebody who said he dropped it in Pepsi. After I got home I (mistakenly) tried to turn it on, but nothing happened.

I realized it was a bad idea after I started researching on ways to fix this. I opened the camera but I don't see any signs of water or any liquid, let alone soda. Here is a picture:

I'm afraid of trying to turn it on again and causing further damage, if I haven't already. Is there anything that looks wrong from this picture? Anything else it could possibly be?