Chosen Solution
When the screen is open to 90 degrees it shows an white vertical stripe with the rest of the screen black. When pull to 45 degrees it shows perfectly. My MacBook pro is connected to external monitor and works fine. Should replace the lcd or just the display cable? Macbook Pro late 2016
You are facing a known issue with the new display design. This design uses two ribbon cables from the display to a T-CON board which sits in the main case unlike the older models which had the T-CON within the display lid. The ribbon cables have been a big problem for Apple in this design there are in fact four cables one for the iSight camera and mic, backlight power and the two for the display as you can see in this breakdown.
So where does this leave you?? You can’t replace the cables as they are part of the LCD panel, all you can do is replace the full display assembly. Now the shocker! It will cost you around $800 USD to get it replaced. I would go to an Apple Store and push to get this covered under warranty exception as clearly this is not something you caused. Do make sure your system is physically clean so its seen as a well maintained (Don’t spray anything directly on the system use a damp cloth). You will need to push a bit, be firm and polite. If you can go on a Tuesday mid morning as thats the best time when they are not over stressed. Be prepared to push this up the food chain until you get the answer you deserve here. I’ll warn you some folks have had an easy time getting it fixed under warranty, others not and having to pay to get it done.
