Front led comes on turn off then back on

I am messing around with my friends white MacBook unibody which he spilled water on. I cleaned off the logic board and put it mostly back together. Plugged it in and the charger lights up as charging but when I press the power button nothing. Knowing that the keyboard is often the culprit I plugged in another MacBook unibody keyboard I have laying around and now when I press the power button the front led lights up stays on for about 4 seconds then turns off for about 2 then back on "permanently". (I haven't left it on for more than about 1 min). The screen never lights up during this time.

Anyone have any ideas? Thanks.

Note- I don't feel like undoing all the screws for the keyboard so the keyboard is hanging out the bottom with no bottom case on.