the battery went completely dead while the computer was asleep, causing it to resume from the sleep image file when power was plugged in) when I would bring it out of safe sleep it would make it 50% through the resume process and then I would get 3 tones/beeps separated by about 5 seconds and then repeating the same sequence. see below picture.I ran into an issue with my wife's MacBook Pro (Early 2011, 2.0 i7) where anytime it would go into safe sleep (i.e. To confirm this we perform direct voltage to the line and looked through thermal camera which confirmed the ram is shorted. The capacitors on the Ram line were shorted to ground. On this MacBook air we find the short in one of the RAM. We also offer MacBook logic board short course which you can join and learn find the MacBook logic board course info here. Unfortunately finding a short of the MacBook logic board and than reading the schematic digram is not something that anyone can do. It is very important to diagnose which part or line is shorted on the line to pin point or address the problem. But on MacBook air and latest macbook pro ram is part of the logic board and soldered on the board. On MacBook pro A1278 or earlier MacBooks you can replace the ram if it got faulty. MacBook air 3 beeps indicate hardware problem most commonly faulty RAM. If there is a short on the board cleaning or new thermal paste layer will never remove the short. Most of discussion on forum at would say clean the board with vacuums cleaner or put new thermal gel layer on processor it never worked for us. You will find many blogs on MacBook air 3 beeps fix we have read few and none of these addressing MacBook air 3 beeps black screen fix correctly. You startup your MacBook air and heard 3 beeps? MacBook air 3 beeps black screen fix only at applefix hamilton.

MacBook air 3 beeps black screen fix applefix hamilton New Zealand

Macbook pro 3 beeps not booting