Pink vertical lines, particularly during dark screens

Here's the needed part MacBook Pro 13" Retina (Late 2016-2017) Display Assembly and her's the guide MacBook Pro (13 Zoll, Ende 2016, Touch Bar) Displayeinheit austauschen which is the same for your model.

@danj I doubt if he will proceed with this kind of repair. Many people stayed away from Mac for a while after becoming victims of this issue.

@tomchai - Yes & No! While some people did sour from Apples direction of a less serviceable and more costly repair. Apple is not alone here! Many people who need the applications that run on macOS will either get their system repaired or look at getting a replacement system.

Remember its about five years when this person bought this system, so while it's painful, it's not unexpected for a new design which is so radical. Apple basically reduced the lifespan of their systems! Instead of getting a good 10 years (like I'm getting in my 2012 15" MacBook Pro) Todays systems are at best getting five years before needing attention and is less repairable! Which is about what the rest of the industry is now. Forcing replacement over repair!

The root issue is poor design at the start! Their so focused on the manufacturing process they forget how to design the system to be serviceable! And surprisingly it doesn't need to cost more! Or even take more effort to build!

@danj For professionals invested in their ecosystem, this love and hate relationship may go on, heck, they may even love it more after this.

Still, there is much to do to turn the whole thing around. You're doing it and keep it on!

@tomchai - The best we can do is offer the needed info so the person is able to make an intelligent decision based on their needs and what they can afford.