Help for a watered MacBook Pro?

Question

Hey everyone!
So, last week, I spilled a pretty full glass of water on my 13-inch non-retina display MacBook pro. The screen stayed on for a little while on the word processing I was doing before it fizzled out. I took it to the Genius Bar, where they told me that the motherboard and battery were both shot, that there was still standing water in the MacBook, and that I'd have to buy a whole new one. They took the undamaged hard drive out for me, and I went home.
Later that night, I was quite distraught, but thought I'd try turning it on one more time, just in case. I practically soiled my pants when the startup sound came through the speaker! The screen (which was functioning perfectly) told me that there was, of course, no hard drive connected.
With renewed hope, I bought a giant bag of rice, emptied out half of it, and put my MacBook inside. (I know that a lot of people on here advise against that, but what did I have to lose?) Yesterday me and one of my Apple-savvy friends opened it up and found that there was no standing water left inside, and the only visible damage was some small (possibly normal) corrosion along the top of the motherboard. We hooked the hard drive back up, but the computer didn't turn on. Any ideas? I have a hunch that maybe the battery needs replacing. I feel like since the computer turned on that one time after the spill, the motherboard can't be completely gone.

Answer 1

but thought I'd try turning it on one more time, just in case.
Bad idea, everyone tries it, always a bad idea. That just causes more damage from a wet logic board.
With renewed hope, I bought a giant bag of rice,
Wont work period.   (see below)
that there was no standing water left inside
Standing water is never the issue, rather water in the 1000 tight places where it will ruin your Mac, and eventually corrode.
Liquid spills, why your MacBook chassis is a one-way valve for spills
After a substantial spill many people will turn their notebook upside down and shake it, not only does this not work, but it spreads liquid havoc throughout your machine and makes things often as bad as possible.
The keyboard itself acts like a one way valve in the case of a substantial liquid spill. While liquid pours into the bottom chassis easy, it does not come out easily at all, and in the case of any spill, most of it will not come out by turning it upside down. Disconnect all power and contact Apple for diagnostics and repair.
Do not attempt to, after a spill, ‘dry out your MacBook’ and test it
After a spill most people invariably try to “dry out” their notebook by various methods, including hair dryers and otherwise. This both does not work, and after a substantial spill of any magnitude, even if the liquid was water, residue is left behind.
There are additionally many very tight places inside your notebook where liquids will linger for a very long time, and cause corrosion or worse.
Immediately unplug your notebook and contact Apple for in shop diagnostics and parts replacement.
In the case of very minor spills people will “dry out” their notebook and feel success that their notebook is working ok, however invariably in nearly all instances after 4-14 days an error / fault pops up and is usually followed by more.
In case of a spill, damage estimates are impossible,.....anything can be fixed, without question.......the question is cost.
contact Apple for in shop diagnostics and cost estimation ....possible parts replacement.