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Apple Desktops Discussion of Apple's desktop machines including Mac Pro, iMac, Power Mac, and mini

Display banding problem


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Mike Sharrard

 
Member Since: Apr 02, 2009
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Hi, I've just bought a second-hand iMac (2009) which has a problem with the display. This has four or five horizontal bands across the screen, increasingly dark from top to bottom. Is the problem likely to be the ATI video graphics card, LED driver board, or something else? Many thanks
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pigoo3

 
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Mac Specs: 13" MB 2.4ghz, 2gig ram, OS 10.7.5

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You could try a fresh install of the OS...but it is more than likely a problem with the logic board. And logic boards on Mac's are generally too expensive to replace compared to the value of the computer.

- Nick

- Too many "beachballs", read this: Beachballs
- Computer seems slower than it used to? Read this for some slow computer tips: Speedup
- Almost full hard drive? Some solutions. Out of Space
- Apple Battery Info. Battery
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Mike Sharrard

 
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Thanks Nick, I'll try the OS fresh install anyway - you never know, it might work...
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If this is a 2009 24" iMac, it's a known problem. Do some googling and you'll find quite a few posts describing the same thing. Sometimes it's the LCD itself that has gone sour, and other times it's just like Nick stated.
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Mike Sharrard

 
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I fitted a replacement LCD and that solved the problem. At least it was cheaper than having to replace the logic board!
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pigoo3

 
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Quote:
Originally Posted by Mike Sharrard View Post
I fitted a replacement LCD and that solved the problem. At least it was cheaper than having to replace the logic board!
Hey...that is better than having to replace the logic board. Congrats!

- Nick

- Too many "beachballs", read this: Beachballs
- Computer seems slower than it used to? Read this for some slow computer tips: Speedup
- Almost full hard drive? Some solutions. Out of Space
- Apple Battery Info. Battery
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