Re: Tempest Color Vectors

Have you checked the color ram at P9?

On Sat, Dec 8, 2012 at 5:17 AM, Rodney Massman <rmassman@hotmail.com> wrote:

> Been working on a Tempest for a friend. At first there was no video
> but the game played fine.
> I found a broken trace between K5 and K3 as someone long ago attempted to
> replace a 2114
> and in the process, burnt a trace.
> So I got video back, however have come across the most peculiar problem.
> At first I thought it
> was a simple issue of the color transistors, so I replaced Q2-4. Nothing
> changed. I also replaced Q8-10.
> I am completely missing Red, Green and Yellow. Has anyone else come
> across this problem?
>
> Bad color vectors:
> http://i269.photobucket.com/albums/jj63/rmassman/IMG_3111.jpg
> http://i269.photobucket.com/albums/jj63/rmassman/IMG_3146.jpg
>
> What it should look like:
> http://i269.photobucket.com/albums/jj63/rmassman/IMG_3112.jpg
> http://i269.photobucket.com/albums/jj63/rmassman/IMG_3149.jpg
>
> Thanks for any help.
>
> Rodney
>

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Received on Sat Dec 8 06:58:58 2012