On Sun, 4 Mar 2001, Mark A. Kippert wrote:
> Mark A. Kippert on 3/2/01 9:53 AM wrote:
>
> > In addition to the 2300 I mention in another post I have a second 2300 that
> > has problems. This one boots fine, has a good main & PRAM battery. The
> > problem is the video.
> >
> > In 8-bit (256) color I get a weird pattern. It looks like every other
> > vertical line (about a pixel wide) is not working. They looks like vertical
> > white lines. If I switch to 16 colors or 4 color the vertical line get even
> > wider. In 1-bit (B&W) the lines are huge, about an eighth inch wide.
> >
> > In 8-bit grayscale everything looks great.
> >
> > If I switch to thousands of color I get the usual 640x400 screen, the lines
> > go away but the screen appears to loose green (or gets more red).
> >
> > Zapping PRAM (or resetting Power manager) won't help.
> >
> > Does this sound like bad VRAM?
>
> I put a completely different screen (from a 280c) on this 2300 and got the
> exact same results. So I'm guessing bad VRAM. Is this replaceable? Is there
> anything else I can do?
Mark,
My 2300c's video has been scrambled since a drop to the floor. Someone
responded then that maybe the VRAM was corrupted ro something. They had
used TechTool Pro to resurrect theirs. My machine, However, freezes when
running the TechTool test.
I recommend you give it a shot and see how it goes. Drop me a private
e-mail if you have any questions...
Tom
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