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Last year, a number of G5's came into my office with defective video cards.
Checkerboard patterns and sometimes when a PDF is opened in the Preview app, weird diagonal dot-patterns appearing on screen.
From your description, that's what you've got.
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BigGuynRusty wrote:
Think more of something that's obvious without having to check any diagnostics.
WOW!!
I thought I was the "Forum Dick"!!
I won't be knocking you off that perch, but maybe if you change your nick you could strive for a different title.
Anyway, thanks for the usual pearl of wisdom buried down in the usual toxic ooze.
Thanks Doc as well--just thought the coincidence of ham-handed RAM installation and bad video card was too coincidental. Wishful thinking, I guess.
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PTA (Post Thread Analysis):
Way more interest before I gave away the answer, but admittedly more useful responses afterwards. In the end, I got my help, and had more fun than I would've with the same-old troubleshooting thread. Let's call it a draw.
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No, let's play again!! I'll start. I'm thinking of a number between 1 and 700 billion. Now it's your turn.... :poke:
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jimbrady wrote:
It's not actually troubleshooting--the machine is as fixed as it's gonna get (is my guess).
SPOILER:
The video is screwed up. Any bright areas on screen are obscured by a pink and white elongated checkerboard pattern. It's like zebra-stripes in over-exposed areas on a camcorder. And, unfortunately, there's a lot of white onscreen in normal operation (including the menu bar and all menus).
If you switch to thousands of colors in display prefs, the machine is useable, but not exactly normal.
The video ran normally for about a week after the retread installed the RAM wrong, and then went bad all of a sudden. I don't suspect the monitor as there are two monitors attached that both got the same prob simultaneously.
I was going to suggest replacing the video card, but I wanted to know if we should bill the idiot repairman for it.
I had a similar problem on my dual 2.5, with video. First the 22" CRT would act freaky, Image mashed, flickering, 100% unusable. restart would fix it, then it would not go away and the second monitor, Apple ADC LCD freaked out. Both monitors doing the same thing. Must be the video card I thought.
Turns out the 22" CRT went bad and was causing the bad video problem on the LCD as well. Once the CRT was unplugged the video card and LCD were fine.
