[Coco] CoCo 2 Factory Composite Video RE'd

[lciotti1]

Very nice!!  Now I have some path forward on keeping my CoCo 2 alive 
with "newer" televisions.

Thanks for all the hard work!

> Zippster <mailto:zippster278 at gmail.com>
> December 14, 2014 at 12:09 PM
> The color mode on this board is pretty darn good even on a large LCD TV.
> The B&W mode is super clear on the same TV.
>
> I added a couple of pics of the output on a 46” LCD TV.
> Of course on a CRT it’s perfect, But this pretty darn good for 
> composite on a big LCD.
>
> Not the best pics, but gives you an idea.
>
> <https://sites.google.com/site/thezippsterzone/coco2-composite-board-2 
> <https://sites.google.com/site/thezippsterzone/coco2-composite-board-2>>
>
> - Ed
>
>
>
>
> David Ladd <mailto:dladd at realmspire.com>
> December 14, 2014 at 10:39 AM
> Zippster, Thank you :D The HD TV's that my family has and the one I
> personally own the tuners still support analog as well as the ATSC
> digital. The thing is the green is super over powering and can't
> hardly read the black text lol. So I figure the composit might be
> better :D Plus this would allow me to use the Playstation One's
> composit monitor too or a car backup camera display panel :D
> --
> David Ladd
> --
>
>
>
> Zippster <mailto:zippster278 at gmail.com>
> December 14, 2014 at 10:03 AM
> Hi David,
>
> I can definitely do that. :)
>
> - Ed
>
>
>
> David Ladd <mailto:dladd at realmspire.com>
> December 14, 2014 at 2:24 AM
> You know you should sell these boards for those of us who have CoCo2's
> that don't want to build their own :D I would love to have a Composit
> replacement for the RF modulator. :D *hint hint*
>
>
> --
> David Ladd
> --
>
>
>
> Zippster <mailto:zippster278 at gmail.com>
> December 14, 2014 at 12:27 AM
> Hi Everybody,
>
> I’ve successfully reverse-engineered the factory composite board found in
> a CoCo 2 I purchased on ebay. This board is a direct replacement for 
> the RF modulator.
> It requires no modifications to the case, and uses the channel switch 
> to select B&W or COLOR.
>
> It seems to have very good output - I’d say better than the reference 
> circuit from the 6847 data sheet.
> It’s a more involved circuit with voltage regulators on-board and is 
> AC coupled.
>
> Pics of the factory and re’d prototype can be seen here for those who 
> are interested.
>
> <https://sites.google.com/site/thezippsterzone/coco2-composite-board-2 
> <https://sites.google.com/site/thezippsterzone/coco2-composite-board-2>>
>
>
> - Ed
>

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