They had a problem with the display cable and it can’t be easily replaced since it’s soldered to the display.
You basically just need to get an entirely new display even though it’s just the cable.
Additionally, some shops will resolder the cable, but it’s not a long term solution.
Even replacing the display by Apple is not a long term solution because they replace it with another display that has a cable that’s slightly too short and will eventually break again.
So the only real solution is to buy a new computer.
Look at the 2016 MacBook Pro.
They had a problem with the display cable and it can’t be easily replaced since it’s soldered to the display.
You basically just need to get an entirely new display even though it’s just the cable.
Additionally, some shops will resolder the cable, but it’s not a long term solution.
Even replacing the display by Apple is not a long term solution because they replace it with another display that has a cable that’s slightly too short and will eventually break again.
So the only real solution is to buy a new computer.
Heck my SO has a 2nd gen Macbook air and it has the display cable problem as well.
Perfectly good laptop, but no OS or hardware support and a repair quote for more than the machine is worth.
Yeah, there is a way to get modern macOS running on it unofficially. I’m debating between that and just putting Linux on it.