Why a vertical line in fixed position on screen?
I noticed there is a vertical line in fixed position on my MacBook Pro (Retina, 13-inch, Late 2013) screen.
The light of this line change over time.
Sometime it's strong and easy to see.
Sometime it's weak so can not see on white background.
Here are photos I took in 2 cases:
I am so appreciate your help if there is cheap way to fix this problem.
Is this a good question?