Why does my screen show irregular discolored vertical stripes?

Question

iMac Intel 20" EMC 2133 and 2210

Model A1224 / Mid 2007 and Early 2008 / 2, 2.4, or 2.66 GHz Core 2 Duo processor

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Bertrand Morin @bertrandmorin

İtibar: 23

1

Gönderildi: 16 Ara 2009

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Why does my screen show irregular discolored vertical stripes?

The screen shows a set of lighter stripes, vertically (top-bottom), in various widths. For example, if i choose a green regular color for the Finder, then the screen is marred by a certain number of vertical bars (lighter green in this case) as if a painter had done these.

Is it the screen, or the lightning of the screen (fluo lamp?)

The problem appeared about 15 months of normal use… out of warranty!

Bertrand Morin

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Exactly the same problem, even the age of the tablets. I bought one at Staples, and later on one at Amazon. They both have the same issue. Strange...

I contact ASUS. They quoted a repair price equal to the purchase price. Definitely won't buy another from this brand. The two are now sitting in the closet waiting for some kind of solution.

kaihansen tarafından 19 Oca 2016

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bac @bac

İtibar: 9,8b

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Gönderildi: 16 Ara 2009

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could be the LCD display, or possibly the graphic card. Perhaps backlight related, but I'd only suspect that if the stripes were NOT confined to exact pixel-aligned lines.

a couple questions and debugging ideas:

1) are the striped always fixed in the same position? or do the come and go depending on what's displayed?

2) do they go the entire height of the display, right to both top & bottom edges?

3) what happens if you change the screen resolution, in System Preferences/Displays - are the lines in the same physical position or do they "move" with the display image?

4) if you take a screenshot (Cmd-Shift-3), do the lines appear in the screenshot, or not?

the above might give some clues if it's graphics card/graphics memory related or the LCD screen.

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Stripes are not clearly defines by pixel, more of vertical zones. Always fixed and independant of displayed content, including Finder Colours especially). Yes, from top to bottom edges. Changing screen resolutionhas no effect. Lines show on the images/pictures.

Bertrand Morin tarafından 16 Ara 2009

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Exactly the same problem, even the age of the tablets. I bought one at Staples, and later on one at Amazon. They both have the same issue. Strange...

I contact ASUS. They quoted a repair price equal to the purchase price. Definitely won't buy another from this brand. The two are now sitting in the closet waiting for some kind of solution. — kaihansen
Stripes are not clearly defines by pixel, more of vertical zones. Always fixed and independant of displayed content, including Finder Colours especially). Yes, from top to bottom edges. Changing screen resolutionhas no effect. Lines show on the images/pictures. — Bertrand Morin

mayer @mayer İtibar: 684,1b MacHale Enterprises 3,3b 1,1b 2,6b · Answer 1 · 2011-03-17T20:14:02-07:00

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mayer @mayer

İtibar: 684,1b

MacHale Enterprises

3,3b

1,1b

2,6b

Gönderildi: 17 Mar 2011

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When you accepted the answer people stopped looking at the question. To try to isolate the problem, hook it up to an external monitor and let us know if the problem persists.

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