Chosen Solution
Happens after a few minutes if the unit is “cold”. If the laptop is warm and i close the lit, the lines are there instantly. I suspect either loose LCD flex cable or GPU issue. Any thoughts? Last 4 digits s/n: H3QD MacBook Air A1466
This is not a LVDS display cable issue. Your issue is within the displays T-CON board which is part of the LCD panel. To be sure you’ll need to plug in via a DP or Thunderbolt cable connected external display If the external image looks OK you’ve proved the issue is internal display. Here’s the guide to replace the display which is the same across all of the series: MacBook Air 13" Mid 2012 Display Assembly Replacement After checking your system model we can aim you to the needed part Update (03/02/2021) Here’s the needed part MacBook Air 13" (Mid 2013-2017) Display Assembly