I spilled juice on my MacBook about 7 months ago. Since then I bought another MacBook Air. I spilled it right on the keyboard, it's all sticky there now. I still have the MacBook. Now the charger works as I've tested it on the new mac, but on the old one it won't turn on or change a color. What would be the default the battery or the logic board. How could I test this. If I were to add a battery from a different laptop aknd then test this would it be ok. Or is there anyway I could test the logic board. I just want to see if anything is working. If all goes unwell what could I salvage. I'm thinking the screen, storage, and wifi/Bluetooth.