MacBook air 3 beeps black screen fix

macbook air 3 beeps black screen fix

MacBook air 3 beeps black screen fix

MacBook air 3 beeps black screen fix applefix hamilton New Zealand

You startup your MacBook air and heard 3 beeps? MacBook air 3 beeps black screen fix only at applefix hamilton. 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. Read some info here . Most of discussion on forum at www.ifixit.com would say clean the board with vacuums cleaner or put new thermal gel layer on processor it never worked for us. If there is a short on the board cleaning or new thermal paste layer will never remove the short.

MacBook air 3 beeps indicate hardware problem most commonly faulty RAM. On MacBook pro A1278 or earlier MacBooks you can replace the ram if it got faulty. But on MacBook air and latest macbook pro ram is part of the logic board and soldered on the board. It is very important to diagnose which part or line is shorted on the line to pin point or address the problem. Unfortunately finding a short of the MacBook logic board and than reading the schematic digram is not something that anyone can do. We also offer MacBook logic board short course which you can join and learn find the MacBook logic board course info here. 

On this MacBook air we find the short in one of the RAM. The capacitors on the Ram line were shorted to ground. To confirm this we perform direct voltage to the line and looked through thermal camera which confirmed the ram is shorted. see below picture.

macbook air 3 beeps black screen fix

macbook air 3 beeps black screen fix

Some blogs suggest that it could be short under processor which can’t be right because if processor is shorted macboook won’t give three beeps. If ram is shorted you will see processor fan running continuously. In the above picture we can see clearly ram is over heating which confirms the ram is faulty. We removed the ram which was overheating at 70 degrees centigrade and tested the line of the short and tested the shorted line with multimeter and short was relieved. recalled the ram and solder it back on. Cleaned the board in ultrasonic machine. Before we put the MacBook logic board we recommend to put thermal pads on the ram see in below picture.

macbook air 3 beeps black screen fix

macbook air 3 beeps black screen fix

Thermal pads will release the any excessive heat off the ram and extend the life of hardware. To secure the thermal pads it is also recommended put caption tape on it.

macbook air 3 beeps black screen fix

macbook air 3 beeps black screen fix

MacBook air three beeps repair

Any problem with your MacBook pro or MacBook air bring it to applefix Hamilton New Zealand at 85/a victoria street hamilton new zealand or call 078394188. If you don’t live in hamilton send your device read instructions here. we will fix and send back to you.

We put the board back and tested and time for a cheer a difficult job done successfully.

macbook air 3 beeps black screen fix

macbook air 3 beeps black screen fix

MacBook air 3 beeps black screen fix

 

 

 

 


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