Chosen Solution
Hi! I have a strange issue. My Macbook Air (A1369) works just perfect, but when I try to turn it off, after the screen goes black, suddenly it starts to beep (3 beeps - period - 3 beeps) and you can hear fan working. The only way to shut down my Macbook completly is to press the power button for a couple of seconds. When I hibernate or reboot my Macbook it works normal. The issue occurs only when I try to shut it down completly. I’ve resetted STC and PRAM and still nothing. Any ideas?
There is likely liquid damage around the RAM chips. I had a 2012 model recently which would work fine, but if you PRAM reset, it will beep 3 times until you reboot it (at which point it would be fine). There was liquid around the RAM chip, so an ultrasonic clean sorted this out. Check around the RAM chips for liquid damage, clean with a brush and isopropyl or preferably an ultrasonic cleaner which a repair shop should have, which will clean underneath the chip.
