Chosen Solution

My MacAir 13" Early 2014 doesn’t power up. I spilled some water on the keyboard 4 weeks ago. I opened the case. It’s dry now. The power cable shows green, but the screen is dark. I brought it to the Apple Store and they quoted $700 to fix it. I am willing to fix it myself. What steps should be done to determine which parts need changing? Thanks in advance, Tom Update (12/06/2016) @keeganbourque: Here are the pictures:

If the screen is dark (no backlight, not lighting the screen), check the following;

  1. Check the screen cable and screen connector for any burnt pins/melted plastic
  2. Check continuity on backlight fuse (will have a little “p” or “n” on it, near the screen connector
  3. Check voltage on the black diode at the top of the board, near the screen connector, above the coil. If it is 1, replace the screen cable and LCD connector. If it is 2, replace the fuse (but check resistance to ground before turning it on, otherwise it will blow again). If it is 3, remove the backlight IC, check continuity from here to the diode, run a wire and fit new chip if no continuity or just replace chip if there is continuity. If you think the spillage may have gone on the screen a bit, the screen PCB itself is likely toast. Try the above. If you are not comfortable carrying out logic board repairs, I would recommend sending it somewhere at this point, since all of the above will need things to be soldered.