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?
-makmac
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