Water Damage to MacBook Pro!

You’ll need to pop off the bottom cover to inspect things and to prevent more damage disconnect the battery ASAP!!

The first thing to do in a situation like this is to not try and power on the device. It’s tempting to see if it’s still working but this can cause more issues than you may have. You also want to get the device opened as soon as possible so you can get any liquid cleaned up. Letting components sit in liquid will cause corrosion and that will lead to devices not functioning. The longer you wait, the more likely corrosion will form and cause irreversible damage.

When the water entered, it more than likely began corroding components on the logic board imediately. If you say it was about an hour, chances are it turned off shortly after water entered the bottom due to the water causing shorts on the logic board. You would most likely have to send it to a board repair person such as myself, or another option is look for a used logic board and replace it using the guide on iFixit. Since it is a 2010 your most econonical option may to buy the board and replace it. What you would need to do is open the bottom, find the logic board number (it starts with an “820” prefix and then jump onto google. Good luck and happy hunting!