MacBook Air 2013 i7 displays odd/random horizontal line

The developers are still looking for a fix. They told me to go to the next Apple Retail Store to try to reproduce the issue on a Mac Book Air 2014. I'll go there in the next few days to give it a try.

Has anyone experienced some issues with the Mac Book Air 2014 (which came out a few weeks ago)?

Ok guys so what do you think we should do. Still wait for some software update which will or will not resolve the issues or what? I find it quite annyoing even if the line shows up every few days or weeks because my brain tells me that my macbook is defective. Is there even any point on sending it for repair?

So I took my MacBook Air to the store. they replace a piece and now i have no more lines. 🙂

I have this problem too and thought I'd share my exact situation here in hopes that this information could help someone more knowledgable diagnose this problem. This horizontal, one-pixel line will scroll up my screen, seemingly faster when I screen down on a webpage or when scrolling down on a map in a game, and will scroll up my screen when watching a video file in VLC Player (m2ts format (HD), if not other formats). It's been like this for about a year and a half. About a year and a half ago I bought a Mini Displayport to HDMI adapter so that I could view my screen on my 720p HDTV. I am fairly certain that my horizontal line problem is directly related to having my HDTV plugged into my 27" iMac. I was actually surprised that no one else, at least on this forum, found this correlation. The HDTV will show no line while the iMac will - therefore I conclude it's a hardware issue. Another instance of this is when I screen share my iMac to my MacBook Pro (I control the iMac screen on my MacBook Pro). Again, the line would only show up on the iMac while it did not on the Macbook Pro. The horizontal line will occur even when the HDTV is powered off. If I unplug the HDMI cable from the HDTV, the iMac's screen will revert to it's original resolution (the resolution changes for some reason when I plug in the HDTV) and the horizontal line will no longer appear. All these conditions are also true for when my MacBook Pro uses the Mini Displayport to HDMI adapter to plug into my HDTV. So again, for me, this horizontal line issue is directly related to outputting my Mac's screen to my HDTV using the Mini Displayport to HDMI adapter.

nathjelly wrote:

So I took my MacBook Air to the store. they replace a piece and now i have no more lines.

🙂

What they replaced? Can you please tell us wich part was replaced, thanks.

Sorry I took too long, I was looking for the repair summary:

It says

item number:

620-6022

Description:

Display Module

And that's pretty much it. No more lines since I got my macbook back.

I hope it helps.

i bought 2014 macbook air 1.4 i5 4 gb ram a week ago and "same problem". i saw the white line 5 or 6 time while using expose and mission control like in video https://www.youtube.com/watch?v=QeoUYYO7N2k&feature=youtube_gdata_player .

i pushed the screen to back because i thought may be it was screen cable. i used "apple diagnostics" Using Apple Diagnostics 2 times and Using Disk Utility to verify or repair disks after these i tried 300 times expose and mission control, i didn't see the line again.

i think my problem solved but if i see the line again i will go to apple store for change my mba to new one. i m still trying for see the line, i have a week for test.

HI guys

What methods do you have to replicate the issue?

I've got a MacBook Air with the exact same specs. I think this issue has nothing to do with the hardware because it doesn't come at a specific place. Secondly, this issue arises only when I'm scrolling through things.

Personally, I think this issue has something to do with the software.

Hi to all,

I would like also to add my problem. I bought this September a Macbook Air (i7,8GB RAM, 256GB, Samsung Display) and I had this horizontal lines problem. As you understand the problem is not great and it does not affect the performance of my Mac but since I bought it I want everything to be perfect (it is not a cheap machine). So, I contacted Apple and they suggested me to go to an Apple Service Centre. The "geniuses" changed the Logic board and they have done a mistake in its order, so I had it back with an i5 processor. Fortunately, even with the downgraded machine I had the same problem. So, I recontacted Apple and I had a replacement of my machine. Now, I have one new machine (i7,8GB RAM, 256GB, Samsung Display) and again the same problem. Guys this situation drives me crazy and completely disappointed with my Air (ok, I know that I may overreact), but my main issue is to find out if this is a software or hardware issue. In both cases (old and new machine), the lines were appearing after many hours of usage, they had a length varying from few inches to the whole screen and their number were mainly one (one pixel wide). An other interesting point (that makes me believe in the software issue) is that the colour of this line was the one of the previous window that I open. As a result, having many windows open, the colour of the line is the the "damaged" colour of the previous window that I minimise. This is my experience. But the thing with the software issue would be universal and not to only few guys? Don't you think?

Also, is there anything new or another one fixed the problem somehow? I start to believe that the model of the display (Samsung or LG) is a critical matter (my girlfriend with the same Air but with LG screen has no problem).

Thank you all!

I bought a Macbook Pro Retina 13" - MGX82 (Mid 2014) this december and have the same issue. Sigh, any effective solution yet?

I bought mine last December 2014 and also experiencing the same issue. I've been to different authorized service centers, have the logic board replaced but the issue is not fixed. i dont know what to do i want to request to replace the whole thing but here in asia i think it would take a lot of process and proofs before they grant your request.

Hi blaichch

Thank you. I changed the display and the thick black line across the top of my screen disappeared. It had just suddenly showed up for no apparent reason, but at least for now it's gone. I have a 2012 MacBook Pro.