[Coco] *COOL* Look what I found! (VideoMod for CoCo2)

[N8WQ]

Hi Fedor,
That looks like a SMT (surface mount) component layout. A SMT pc board 
would have to be made or you could use what us home brewer's call 
"manhattan style" construction. Or we could translate the project to 
"through hole" components. It would be nice to see the schematic though. LOL
The BSR14 is a NPN general purpose amplifier.

Alan Jones
http://exwn8jef.googlepages.com/home
http://n8wq.blogspot.com



Fedor Steeman wrote:
> Hi all,
>
> While going through the huge lot of copied CoCo Manuals I inherited from
> Michel Collette, a former Dutch CoCo-society regional coordinator, I
> discovered the following schematics for making a video buffer mod for
> the CoCo2, enabling a CoCo2 to be coupled up any television or video
> equipment with a composite video input:
>
> http://www.steeman.dk/CoCoManuals/VideoMod_(KoenVaartjes).pdf
>
> How cool is that!?
>
> It is all in Dutch, written by someone called Koen Vaartjes, but if people
> are interested I could translate, clean it up, perhaps redo the schematics
> in a graphics editor and put it up on a webpage!
>
> Some of the equipment i inherited from Michel Collette actually included a
> CoCo2 with this video mod. I tried it out when I first discovered it and it
> worked flawlessly then. After having transported the CoCo one time, however,
> something went wrong, because after that all I got was a black screen and no
> sound. I believe there must be a loose contact somewhere, because every now
> and then when I try it, it works again.
>
> The final page looks like a schematic of a scart cable (
> http://en.wikipedia.org/wiki/Scart) that is widely used in Europe at least.
> I do also have a modified SCART cable that can be used to hook up the
> RGB-output of a CoCo 3 to a normal television with a scart input. That too
> once worked, but not anymore. Maybe if someone could help me understand the
> schematic, and figure out what wires of a RGB-cable should be connected to
> what pin of the scart, I could try to fix the cable or make a few more for
> anyone interested... This would mean that a CoCo3 could be connected from
> the RGB output directly to a television with scart input.
>
> Cheers,
>
> Fedor
>
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>