Macbook Air 2011 Black Screen

[davg]

I have been working on this Macbook Air with a black screen No video no backlight it was suggested it could be a logic board problem so I purchased and replaced the logic board and the problem still persist. Everything works fine and using an external monitor I have video. Can someone here offer a diagnoses? I have not tested the video cable because the screen has to come apart to do that. Is there a known problem with these cables? I don't think it is a backlight problem because I can't see an image when I shine a light through the apple. Are there other known problems with these MBA screens?

 

[davg]

How is the black hinge cover removed is this glued in place? It must come off easy because all the video I watched it is already off?
[doublepost=1484250958][/doublepost]Found it thanks to this link https://www.ifixit.com/Guide/Installing+MacBook+Pro+13-Inch+Unibody+Mid+2010+Clutch+Cover/6023/2

 

[davg]

Success in this venture. The problem was dirt on the connector just cleaned it and it worked. Important to note a small bit of debris on the connector can cause a lot of problems.