One of the worst things that can happen to your MacBook Pro is water, wine, soda or something else spilling on it.
A sinking feeling in the stomach happens as the liquid begins settling in.
A new Logic Board usually costs hundreds of dollars; and most often closer to a thousand than $500. AppleCare and Apple support will replace a Logic Board for a fee if you are outside of warranty, but there are a few ways to resurrect a dead Logic Board that are worthy of attempting first and it could save your wallet hundreds of dollars.
Most often what breaks is the keyboard assembly in the unibody MacBook Pro. Sometimes the MagSafe power board will also be damaged significantly and will need replacement. But if your Mac won’t boot, you definitely need to get the Logic Board services as soon as possible.
What Should I Do?
If you get a liquid spill on your MacBook, the best thing you can do is turn it off completely while you ask someone to go help you get some towels to pat the MacBook Dry. If your MacBook has a removable battery, you can take that out as well. If it doesn’t have a removable battery, taking it to a repair shop right away could increase your chances greatly in a successful recovery from water damage. The main thing you do not want to do is to turn your MacBook on and off a bunch to see if it magically works. It won’t. It must be disassembled for inspection and cleaned.
Some technicians do not feel comfortable in working at the component level for repair, but as a person who doesn’t believe in “Can’t.” before “How?” I am always willing to do my best in resurrecting the damaged Logic Board first. My diagnostic fees are teensy tiny and I have a good success rate at getting the MacBook functional again.