Dead laptop after spilled liquid (ice tea)

It's been two days since I spilled considerable amt of ice tea on the keyboard. The trackpad and keys were not working and it doesn't turn on anymore. I assumed that it was lack of battery but when I put charger it seems working well. If I try to turn on the laptop just the caps lock's key is on(with the green dot light) but nothing else. I really need to fix it myself because the cost in apple store to repair them was $755. I don't know how could he make a cost like that because he didn't even closely look at it. He said they are going to replace everything. I just ordered some screwdrivers to tear it down and it will take few days. I am seriously worried about buying parts like logic board or keyboard since they cost a lot. Does anybody have an idea if I would really have to replace them?