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Hi Guys, I have Mac air 2017 and one day it abruptly goes off (not shut down) while I have 56% of battery. That time I was watching video on YouTube. I tried to reset SMC and other but nothing happened than I simply connect it to charging and after half an hour it showed charging and when I turned back on. But after 2 days when I connect it to internet it again goes off and now it’s not charging showing nothing on screen, no fan or such feel in Mac. I noticed that when I were going off first keyboard backlight went off than screen and now It’s completely dead. What to do ? Update (09/01/2020) Between these two days, my mac was on standby I was not using it.
Then your systems SMC to charger connection has failed and/or you have a bad charger and/or the SMC logic on the logic board has failed. So let’s start off looking at the DC-In Board connection. Looking at the connector on your system has one or more of the contacts become stained as see here
Using a cotton swab (Q-Tip) just damp with isopropyl alcohol, you could also try cleaning the surfaces a fresh pink pencil eraser as well. Otherwise here’ss the needed part: MacBook Air 13" (Mid 2013-2017) I/O Board and here’s the guide to put it in: MacBook Air 13" Early 2017 I/O Board Replacement Also review this Apple T/N: Apple Portables: Troubleshooting MagSafe adapters is the MagSafe cable or the cable end damaged in any way? If it is you’ll need a new charger. Make sure you get a REAL Apple unit Apple 45W MagSafe Power Adapter for MacBook Air Please don’t buy a cheap knock off unit as they will damage your system! Get the REAL Apple unit directly from Apple. ● Don’t Replace Your MacBook Charger With a Cheap Knockoff ● OEM MagSafe Chargers vs Cheap Imposters: Teardown for Truth ● Lacking safety features, cheap MacBook chargers create big sparks ● FAKE Magsafe MacBook Chargers on eBay - Watch before buying a Mac Charger At this point if neither solved your problem your logic board is SMC logic is damaged
