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Macbook air 2011 A1370 random issues.

R

RESQ-MYTECH

New member
Hi all. Greets from the UK. I think I already know the answer to this question, just need clarification. Take out of the equation the customer will whine like a rusty bearing when I quote for the repair, will try to bid me down, even though my component level skills are much better now i do not use an arc welder to solder with and I have a microscope now so I can actualy see the logic boards, I am wondering if I should persue the repair.

Symptons are, not being able to install any version of OSx. There are random green horizontal box's that appear on the screen and also, sometimes 3 beeps with a non illuminated black screen (see video). Upon opening there is clear evidence of liquid ingress and previous attempt at repair. More evident around the RAM chips. See pics.

My diagnosis is one or more RAM IC's to be at fault.

Given my soldering skills are mediocre at best, I do not want to attempt a reflow or replacement of these IC's.

Am I better to swerve this repair? Thoughts are on replaceing the logic board.

What do you lot think?
 
2informaticos

2informaticos

Administrator
Staff member
If someone already tried to reflow VRAM, possibly with "chinese honey", I recommend you to pull out all the chips and reball them.
Is better option to change them directly, if you get compatible chips.
 
R

RESQ-MYTECH

New member
thats the thing though 2informaticos , I dont trust my skills enough to attempt this level of repair. It is not an issue if its my mba but its a customers and at this time it does ( however not all the time) power on and give an image. Do not want to risk killing the logic board and then have to replace the unit. Since the original post, I have also noticed that when the SSD is in place the machine slows to a snails pace, taking approc 7-8 mins to get to the no files icon and 5-6 mins to detect an external drive is inserted to choose an operating system. Remove the SSD and the machine performs as normal in respect of booting.
 
R

RESQ-MYTECH

New member
WOW!!!! Decision made. Customer was rude and demamded that the MBA was working fine when he gave it to me. Seeing as I powered it on when he was here and it's in exactly the same state now, I felt he was being..... umm a douch. So he has it back. No longer my problem. Dont get me wrong, I was leaning towards no doing the repair, he made my mind up.
 
R

RESQ-MYTECH

New member
It did fire up say once in every 4ish times to the no files icon. when attempting to load the O/S from another drive it would crash back to the black screen with 3 beeps. If it got to the point of allowing the installation progressing then there was green blocks in random places on the screen. Then it would power off. main thing was there was no consistancy to the occurance of the issues. the liquid ingress was definatly the main issue and coupled with a sloppy job done with reflowing or possibally changing of the RAM chips made me lean towards it being the RAM. the other issue of running extremly slow with the SSD in-situ also compounded things. TBH, I am glad that I didn't get to involved with it.... I could see this being a can of worms that was open at both ends :)
 
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