Chosen Solution
Mid-2013 MBA suddenly froze up in the middle of use. Closed it up, refused to boot afterwards.Took to Genius Bar. All attempts at SMC reset, PRAM reset, etc. failed. Charge light does not react to SMC reset.They suggested logic board failure. I ordered new logic board on eBay and installed myself.Here’s where it gets weird. Nothing happened at first. I fiddled around with unplugging battery and plugging back in, etc., and lo and behold it did start up eventually! But with telltale symptoms of an SMC issue: fans running hot, slow performance, etc. But this is a new logic board!Now sometimes it starts up, sometimes it doesn’t. Last night it started up a half-dozen times out of maybe 200 tries. This morning, won’t start up at all.Any suggestions? I’m stumped. Thought replacing the logic board would do it :-/. Thanks for your help in response.
I had one in like this. Drove me up the wall. Once it started all would work well. But if I shut it done it would not start unless I disconnected the battery and the mag-safe then plugged them back in. I ended up replacing the keyboard and it was the power on button. It works just fine now. No water damage and all the other keys worked just fine.
Check the pins on both ends of the trackpad cable, the trackpad board, keyboard cable, charger board, and pins on the I/O cable (runs across the fan) for liquid damage or burnt pins. The I/O cable & charger board can cause a dim green light, and the I/O cable & trackpad or trackpad cable can cause high fan spin, if the new logic board is definitely working. Check these out, I can guarantee this a few of these will be the issue. Most likely will be a bad I/O cable.
