Rod dots on the screen

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Level 1

50 points

Rod dots on the screen

I have a brand new iMac 27" 3,4 GHz Intel Core i7 with 16 GB RAM and AMD Radeon HD 6970M 2048 MB. I have two 23" Cinema Display connected via two Displayport/Thunderbolt ports.

I have discovered small red dots fluidly appearing on the screen (only visible on dark background). They come and go and apperas in a repeating linear pattern.

What might be the cause of this?

I hope you can see them on the enlosed image, maybe click to enlarge.

MacBook Air, Mac OS X (10.6.7), 2,13 GHz Intel Core 2 Duo, 4 GB RAM

Posted on Sep 28, 2011 4:13 AM

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Answer 1

a brody

Level 10

82,941 points

Sep 28, 2011 6:12 AM in response to Hans Eklundh

What you may be seeing is what is known as sleeping pixels. Since it is a brand new machine, see if the return/exchange policy lets you get a replacement free, or if you might want an exchange under warranty. If they go away and don't bother actual images, I wouldn't worry about it. Sometimes if you very gently rub a sleeping pixel, it will go away quicker. But do not press too hard as that may damage the screen and void your warranty on it. So be careful!

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