If the green light comes on at all - its not the fuse.
When you power up the green light should come on, after a couple of seconds the unit should power the screens, if it doesn't then it can flash one of the screens then switch off, the screen that flashes is OK its the one that doesn't that is faulty.
If you have tried to turn it on without opening it up and drying it out - its probably fried the motherboard. Water can stay inside for days even in a warm room
My advise open it up, check its thoroughly dry, check the switch on, if a screen flashes change the other screen, if not screen flashes it is problably beyond repair!