Question about Apple iMac G5 Desktop

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COLOR VERTICAL LINES.

WHEN I SIGN ON MY MAC G5, I GET ALL THESE LINES. HELP!!!

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Vertical lines are problems that usually arise from either a bad lcd or video card ( GPU).

There is no fix, other than replacing the bad part.

If you want to do it yourself I've got service manuals, but unless you have experience it's no walk in the park.

Is it still under warranty?

You might be able to get an extended warranty through AppleCare.


Posted on Feb 28, 2009

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graysand
  • 558 Answers

SOURCE: COLOR VERTICAL LINES.

You have a bad lcd.No need to reinstall you os.This is a known issue with some macs.I just completed 30 repairs on the same brand.Apple can't realy reveal a fix,however they will replace the logicboard,the lcd and the lcd cable if you are still under warranty.
Good luck

Posted on Sep 12, 2009

6ya6ya
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Posted on Jan 02, 2017

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For more help follow the Apple iMac g5 line on screen discussion over here https://discussions.apple.com/thread/4929409
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Most likely its a Hardware failure. To reaffirm... insert you install cd that came with your computer. restart computer and hold down "c" until you get the the install screen. Are you still getting vertical lines? You probably still are.. there can be 2 culprits. 1: logic board or video card. To figure it out which is it, hook an external monitor to it. If vertical lines then its the Logic board. If not then its the video card. Now for some odd reason the lines are not shown when you boot to cd, it may be an OS issue. another thing you can try. turn computer on and hold down Apple+option+P+R and let go after 3 chimes. ya never know. good luck!

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http://search.info.apple.com/index.html?q=imac%20g5%20reset%20pram&lr=lang_en&search=Go&type=

http://search.info.apple.com/index.html?q=imac+g5+reset+smu&type=&search=Search&lr=lang_en&search=Go

Keep me posted.

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