Display problem, please confirm

hippy dave

macrumors newbie
Original poster
Sep 15, 2009
9
0
My MBA has had this screen issue that I could previously always resolve by fiddling with it, but it's recently got worse and I'm struggling to get it working at all. The video background is quite dark but you might see my hand tilting the screen a bit, I was also pressing on the back a bit.


I'm thinking of replacing the whole display assembly. Please can you clever people confirm that it's just the display assembly that wants replacing, and not the logic board? Or could it be cable related, or...?
Cheers!
 

madrich

macrumors 6502
Feb 19, 2012
483
75
World Class City of Chicago
My MBA has had this screen issue that I could previously always resolve by fiddling with it, but it's recently got worse and I'm struggling to get it working at all. The video background is quite dark but you might see my hand tilting the screen a bit, I was also pressing on the back a bit.


I'm thinking of replacing the whole display assembly. Please can you clever people confirm that it's just the display assembly that wants replacing, and not the logic board? Or could it be cable related, or...?
Cheers!
What model and year is MBA?
 

ZapNZs

macrumors 68020
Jan 23, 2017
2,310
1,155
When you say fiddling with it fixed it, do yo mean that if you moved the hinge back and forth eventually you would find a position where it would work correctly?
 

hippy dave

macrumors newbie
Original poster
Sep 15, 2009
9
0
When you say fiddling with it fixed it, do yo mean that if you moved the hinge back and forth eventually you would find a position where it would work correctly?
Basically yeah - careful nudging of the hinge position, and sometimes pressing on the back of the screen. I realise that both those movements could affect the cables, and possibly even stuff inside the bottom half of the computer, so that's why I'm hoping someone can tell me which part(s) are the likely culprit.
 

Sedulous

Contributor
Dec 10, 2002
2,479
2,430
I would guess there is something wrong with LCD or cable... leaning toward LCD is cracked somewhere because I think (and I could be wrong about this) video data from cable is either all or nothing (simply would be no video if issue was with cable). If problems are absent from external display then this means issue is limited to either cable or LCD. That is the limit of what you can test without disassembly.

The cable connects to a board that is behind the bottom bezel. The connector is slightly to the right of center. If pressing on the back of the screen induces the distortion then it would seem likely LCD is faulty because cable is fairly isolated from back of display.
 
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hippy dave

macrumors newbie
Original poster
Sep 15, 2009
9
0
Thanks. Just as an update, I finally got it working again this evening and it's been perfect for a few hours, though I'm apprehensive that it will be problematic again after it's been to sleep.
 
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