If you are going to respond please read the entire thread.
So I'm an idiot and spilled beer on my keyboard. It was only a little and went mostly on the arrow keys. Turned it off immediately although it did stay on when the spill occured.
Put it in a bag of rice and kept it off for 2 days. Brought it to an apple store and asked for a diagnosis. He said everything looked fine, no corrosion. He didn't turn it on though.
To my dismay I come home and it will not power on. No click no beep no sounds at all. The battery is behaving normally. I tried disconnecting the battery from the logic board and using the charger but no luck. Reconnected it and tried resetting the SMC but nothing.
What else can I try :-( this would be a serious blow to my livelyhood haha
Once you remove the logic board, you're probably going to see a bunch of residue. You'd probably want to clean that up before corrosion gets to it, and components fall off). Here's the basic overview of the procedure I use when I get a liquid damaged macbook pro.
You have 2 options for a cleaning solution: Electrical contact cleaner (this is a harsh chemical, you'll need to perform the cleaning outside if you wish to use this), or you can pick up some 91%+ isopropyl alcohol from a drug store.
For your purposes, I'd take a trip to home depot, and get a couple of cans of Quick Dry contact cleaner, it's pricey, but worth it. It does the job much better than rubbing alcohol. And it's is not a liquid, but an spray that is sprayed onto the pcb for cleaning. Usually I use the cleaner held very close to the board to blast off any contaminants on the surface.
Anyway, you'll need to remove the logic board, fans, heatsink, and speaker assembly. You need to remove EVERYTHING on the board, including wiping off the thermal compound on the CPU & brushing off dust (unless you like nasty dust clumps). This is also a great time to blow out your MBP's fans, and pull clumps of dust out of the heatsinks.
Once you have the totally bare board, spray it down with contact cleaner (spray less than 1 inch from the board). On both sides, under any BGA mounted chips, in between every pin on every chip, make sure you get everything. If you're sing isopropyl alcohol, then get a toothbrush (brand new one, make sure the brush is flat), pour the alcohol on the board, and scrub it down (you won't be able to get under BGA with this).
Once your done with that, flip the board over, and repeat. Dry the board with a blow dryer on a heated setting, hover over any BGA chips (processor, GPU, RAM controllers, etc) until the solution stops bubbling out from under the chips. Once it's dry, take a close look at the board, and re-clean any areas with any remaining residue.
Wipe off any and all connector cables with a Q-TIP and your cleaning solution.
Now, if your keyboard isn't working after your repair, you'll need to A) purchase a new keyboard (remove DVD drive, and frame, then remove 100+ tiny screws, and install the replacement), or you can spend a bit more cash and get a used top case assembly. Either way, you're looking at $50-$80 depending on condition. As a last resort, you may want to try to spray a bunch of contact cleaner into the keyboard and let it dry, I've had limited success with that.
Oh, and by the way, set aside 1-2 hours to do this.