Purple line appears on my iMac 5K screen

[aliadel]

Hi,

I've just had a purple line appears on the screen, the line is coms and goes in same place. and sometime it change the color when touch the screen or move it.

the problem is happened after i update to the new macOS 10.12.3

Hope if someone can help with that.

Thank you,

 

[curmudgeonette]

I've just had a purple line appears on the screen, the line is coms and goes in same place. and sometime it change the color when touch the screen or move it.

The LCD panel is dying. Specifically, a column driver is failing or its connection to the actual LCD is failing. You can expect more and more lines to appear as other columns fail.

 

[aliadel]

The LCD panel is dying. Specifically, a column driver is failing or its connection to the actual LCD is failing. You can expect more and more lines to appear as other columns fail.

I contacted Apple and still negotiate with them for reparation, Thanks you so much for your information and I will let you know how that's goes