Troubleshooting Logic and I/O board on A1370 11" MB Air after wine spill

OK,
My wife spilled about 1/4 cup of wine on the keyboard of her MacBook Air. This is an A1370 (EMC 2471) 11" (Core i5 Mid 2011) model.
I have read the articles in this forum and others on what to do when you spill on one of these computers.
What I would like from this forrum is guidance/help/suggestions/best-guess on determining what I need to replace.
Here are the details.
Directly after the spill, she tells me that the computer turned itself off, and would not come back on - no lights, no start chime, nothing.
I immediately took the back off the computer and mopped up what I could without completely dissasembling the system because it was late at night.
The next morning, one of the kids tried to start the computer (ya, I know that's bad and don't know why the **** he did it but he did). He "fessed up" later and said that when he pressed the power button the keyboard lights came on and chimed then went off and that was it.
I proceeded to take apart the computer, removing the battery, logic board, I/O board, airport, HD, etc.
I noticed that there was wine stain on the logic board and the I/O board and other areas and cleaned it all up with isopropyl and Q-tips.
I then gave the logic board and I/O board a very thorough wash with a cleaning spray by MG Chemicals called "Safety Wash II". Basically alcahol.
I scrubbed the two boards thoroughly with a soft bristle brush for about an hour, then I soaked the entire board in isoproyl alcohol bath for 2 hours then sprayed and scurbbed again until I felt that I got all the wine off.
I did notice a small amount of "purble" on two of the tiny contacts for the LCD connection on the logic board but could not remove no matter how much scribbing I did. The two contacts were number 3,4 if you are counting from right-to-left when viewing the logic board from the bottom of the PC, with the fan to the right.
After a good dry with a hair dryer and letting it sit a few more hours I put it all back together, crossed my fingers, plugged in AC and pushed the power button -- nothing happened.
I had an orange light on AC adapter so I let it charge over night. The next day the AC light was green and the backlight on the keyboard was lit. Tried starting and still nothing.
I took the back off again and disconnected the battery then plugged in the AC adapter. At that point the fan started spinning and I got the start "chime" but nothing on the LCD.
I disconnected AC and plugged in battery and noticed the same thing.
Now whenever I disconnect AC chord and reconnect it I get the chime with fan starting but nothing more.
Also, the backlight on the keyboard stays on all the time and the fan runs all the time if the batter or the AC is connected.
So, I am wondering what I need to replace?
logic board?
I/O board?
keyboard?
all of the above?
Would appreciate guidance.

Zane is right, ....I used to repair laptops for years as well,.....diagnosing such things is FUTILE.
Lucky you there are are almost no parts IN the macbook Air. Its IO and Logic and thats really almost it.
Contact Apple for in shop full diagnosis and parts replacement,......youre not going to "diagnosis" nor "fix" it after a spill (without parts replacement) by any means.
Even if you had a BEST CASE spill.....corrosion and failure would ensue on average 7 to 20 days.......then kaput.
Spills turn the best computer repair person into what looks like (to the customer) dufus......WHY? ......because its a  "spin the wheel and GUESS where ALL the liquid went"
replace A......works ok for a week.....whoops, ..........oh yeah, theres a couple drops under under a solder connection on part B........replace that....

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