Chosen Solution
I spilled milk on the keyboards, a lot. I ran diagnostics and the charging and battery are completely fine. It’ just doesn’t charge nor stay on unless plugged in. What is the issue with it? Is it something I can fix? Apple want’s to charge me over $800 to fix it. They didn’t tell me what was wrong with it except that there’s liquid damage but my computer runs smoothly and has for over four months except I just can’t use it without it being plugged in.
You’ll need to open your system and carefully remove the logic board. Sadly, milk has made its way inside and onto your logic board from the other side. Take some pics so we can see what needs attention. Look for staining, discoloration of parts and corrosion damage Adding images to an existing question. Follow this guide: MacBook Air 13" Early 2014 Logic Board Replacement
