Back in the old days of CRT monitors, which were much like television
sets, I turned a monitor on one day, and it was all green and blue and
flattened and looked very much like this, even though all colors seem to
be here. They are not balanced as the should be. This looks like a
problem in the circuit which controls the color balance for the screen.
in some parts of the screen the color is gone, such as on the dialog
window you have displayed. No red, green or yellow in the upper left
and no pretty blue on "display" or the slider bar. I don't understand
why you think this is not a screen problem. The screen shot will show
what the screen is displaying, no matter the machine. I think you have
a big problem with whatever circuit controls the display output. Just
my opinion, and way too early for real thinking. Peace, Dennis in Victoria
Jonas Ulrich wrote:
Hi all, someone gave me this iMac the other day, and it has the dreaded
graphics issue: Anything of a light color on the screen is distorted and
has small lines and distorted pixels. (see picture) I've determined this
is not a screen problem because I took a screen shot and opened it on
another machine and saw the problem still. Here is what I've tried:
Zapped pram
Reset nvram
Reset SMU
Reinstalled the OS
Cleaned inside and re seated all the cables.
Checked capacitors, there is NO swelling or leaking
Is there something I can try to fix the graphics chip? What exactly is
the problem? Thanks in advanced!
P.S It is the 2nd generation imac 20" with a 2.0GHZ G5 Processor.
-Jonas
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