SosekiOM

Q: Bracket replacement and RAM failure

Hi,

 

I have a MacBook Pro 13-inch, Mid 2012.  with 4 GB RAM sticks (2 x 2GB; 1600 MHz DDR3). One day it didn't recognize the HHD and I took it to the MacStore. They told me it was a bracket problem and changed it, because of the quality program. It worked a few hours but then it started to show some strange lines in the screen (I post the photo), while it was stuck, and after that it reboot. I turn it on again but it started to make some noise, beeps three times and doesn't boot.

Failure.jpg

I decided to take my MacBook again to the MacStore and they told me that it was possibly a RAM or a logic board problem, but in the Apple Hardware Test everything looks good.

They said it was all ok and that the MacBook had been working without failure over night, but after that when I was using it in my house, the failure started again.


I was thinking it was a RAM problem and decided to take a RAM stick out. It turns out that the Mac works good. I change the slot and the stick for using both positions and it always works but only with one stick.


I'm considering to buy some new RAM but I don't know what do you think.


I have also run the Apple Hardware Test with only one RAM stick in any position or with both of them and everything looks fine. Sometimes it is possible to turn it on with both sticks but then some new lines appear.

Failure2.jpg


Any ideas?


Thanks a lot.


MacBook Pro, OS X El Capitan (10.11.6)

Posted on Sep 7, 2016 1:56 PM