Turquoise vertical lines fill the white spaces on screen

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Hi!

My beloved MacBook Pro 17" is having strange turquoise vertical lines in all white spaces on the display. This does not occur when conected to an external monitor (see picture).

I have looked extensively on the web, but cannot find this spesific fault.

Is it my display cable? The computer has had several HDD-changes, (thanx to iFixit teardown-help!).

I also added a SSD in place of my DVD.

I have lost it on te floor on several occations, and i has been used more or less 24/7 since it was bought in 2010.

Please help, dear iFixit! :-)

MacBook Pro 17" Unibody, mid 2010

Prosessor 2,53 GHz Intel Core i5

Memory 8 GB 1067 MHz DDR3

Software OS X 10.8.5 (12F45)

Graphics: NVIDIA GeForce GT 330M 512 MB

Ending of serialnumber: WDC79

Update

Hi!

The lines are only visible on the macbook screen, not on my external monitor.

They also come and go depending on the angle of the screen.

Is it only the cable, then? Hurray!!!

S

Answered! View the answer I have this problem too

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Connect to an external monitor if you see the same thing you've tossed it around one time to many and damaged the VPU/VGC. If you don't - you've only damaged the LVDS cable or display.

If this answer is acceptable please remember to return and mark it.

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I had this problem with my 2011 MacBook Pro 17". It turned out to be nothing more than a loose battery connector. Luckily, I fixed it myself when I took it apart to diagnose it. The first thing I did was pull the battery connector off, and that was when I noticed it wasn't solidly attached. (They sort of snap on with a bit of a "click".) All fixed!

I've seen similar things in the past. Loose connectors anywhere inside your Mac can sometimes cause weird things to happen that don't always seem to make sense.

I've noticed Apple hardware is meticulously designed and constructed. (Unlike any other brand I've worked on.) Whenever something doesn't fit just right, it means you've done something wrong. NEVER force anything on a Mac. If a gentle nudge doesn't work, look for a cause of your problem. I guarantee it's there—you just have to find it!

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simen9000 will be eternally grateful.
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