[Coco] CoCo 2 Factory Composite Video RE'd

[Zippster]

The circuit would work with any MC6847 output.  This particular board layout
fits Korean CoCo 2 motherboards with the RF modulator that lays flat on the mb.

I can layout boards to replace the other RF modulator styles as well,
including CoCo 1’s.  I have a couple of CoCo 2’s that use the earlier modulator
that attaches on one side of the modulator (sticks a couple of inches up from the mb).
So I can work up a board for those.

I have a couple of CoCo 1’s, I’ll check out the modulators on those and see what
would need to be done.

Since it looks like we’ll end up with at least 2 versions of this, I’ll try to get some
pics posted to help people know for sure what will fit their motherboard.

- Ed

 
> On Dec 15, 2014, at 8:53 AM, Ronivon Costa <ronivon.costa at gmail.com> wrote:
> 
> I probably missed something ...
> 
> but will these composite mod work on any coco ?
> 
> I will  want at least one pcb, may more if I can replace other coco's RF
> with these mods.
> 
> On 14 December 2014 at 15:10, Zippster <zippster278 at gmail.com> wrote:
>> 
>> Hi Rogelio,
>> 
>> I want to run a second revision through OSH Park and check it
>> out (I had to apply 1 patch to the proto where I missed a connection).
>> 
>> Then I can have pcb's made / assemble units for those that want them.
>> 
>> So around 4-6 weeks probably to be shipping finalized boards.
>> 
>> - Ed
>> 
>> 
>> 
>>> On Dec 14, 2014, at 5:13 AM, Rogelio Perea <os9dude at gmail.com> wrote:
>>> 
>>> On Sun Dec 14 2014, Zippster wrote:
>>> 
>>> 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.
>>>> ...
>>>> 
>>> 
>>> 
>>> Remaining matter to clear out is the when can we get the board for such a
>>> beauty? :-)
>>> 
>>> 
>>> -- RP
>>> 
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>> 
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