MBP 2016 15" A1707 horizontal lines

[kohsamui100]

My A1707 has horizontal lines from top to bottom. When it started (2 years ago), it only happened when fully opening the lid, and when taking it down to a lower angle, it was ok. Now the lines are always there, no matter the angle, so I assume this is not a chip problem?

It also used to leave "shades" of items you would "drag" across the screen, but this doesn't seem to happen anymore. It does have some kind of pinkish "shades" of the top bar "burnt" into the retina screen...

Is anyone familiar with the issue and knows the cause or how to fix this? and if that's a broken flex, then which one of them?

Here are pictures:

22222.jp2

drive.google.com

111111111.jpg

drive.google.com

Thanks for the help!

 

[Sanpete]

Sounds like a cable problem, since it was sensitive to how the lid was situated. Look up flexgate. Apple may cover a repair, or at least they might have two years ago. They usually have time limits. Worth taking in to an Apple Store if you can.

 

[kohsamui100]

Question is which one of the flat cables is most likely to be responsible to this kind of fault... I believe it isn't the backlight ones?

 

[Sanpete]

I think there's only one cable assembly, and either part of it can be at fault, from what I've read. Apparently a touchy repair job if you only replace the cable.

 

[JPack]

I think there's only one cable assembly, and either part of it can be at fault, from what I've read. Apparently a touchy repair job if you only replace the cable.

Always interesting to see these complete repair videos. Sadly, I doubt anyone outside China has the skills, tools, or materials to perform these repairs.

 

[kohsamui100]

any further suggestions please?

 

[DeltaMac]

If the repair is "touchy", I think the "touchiest" part is finding replacement ribbon cables.
It's a hardware problem, and yes, likely a ribbon cable is the fault.
Purchase a replacement display assembly, which will include both ribbon cables, and, of course, the LCD panel, which also could be the fault.

 

[kohsamui100]

but which of the screen flat cable is responsible for this type of problem? if I know which one I can order a replacement and jumper it.

 

[DeltaMac]

If there are two separate ribbon cables-- usually one will be for the screen backlight, and the other would be the video data cable.
Not likely to be backlight, so it would be the other cable. (sorry, I don't have any other information about which is which)
I could be wrong, but I don't think the cables are available separately. If you have a source, then get the whole set of cables (probably not that expensive, and you would have both, in case the part that runs through the hinge has damaged both cables, such as that visible in the repair video that Sanpete posted in post #4

 

[Lasermoon]

3 examples of flexgate repair videos

 

[macsoluter]

3 examples of flexgate repair videos

Is this a flexgate problem ? see video

 

[DeltaMac]

flexgate is more often a backlight issue (screen goes black), but your issue could be the same fix, which can be the flex cable(s) that connects the display to the logic board. If that does not fix the issue, then it is likely the graphics chip (and replacing the logic board)

 

[macsoluter]

flexgate is more often a backlight issue (screen goes black), but your issue could be the same fix, which can be the flex cable(s) that connects the display to the logic board. If that does not fix the issue, then it is likely the graphics chip (and replacing the logic board)

thanks for your reply

I ordered a dockingstation USBC to hdmi and i shall do a test to see if an external display gives the same problem.
Then i can exclude if there is a problem with the gpu ?

 

[kohsamui100]

the screen now is completely blank when fully opened. If I close the lid and open it just a few degrees then I can see a full and correct picture. A few degrees more and a blank screen. I know the backlight works as I can see the faint light although no picture. Which one of the flat cables is responsible for the picture (and not backlight)?

 

[daneoni]

There's a display flex cable which sounds like the problem. iFixit might be able to help

 

[mrfunnypenguin]

I believe both are, if I remember correctly all the wider flex cables are for data. The one on the left is for the left side of the screen, and the right is for the right side. The other cable that looks like backlight is for the camera. Normally what causes this issue is sand or dust particles getting in the way of the cables and over time they rub and the insulation wears off.