[Coco] Help reviving an old CoCo 2

Bruce W. Calkins brucewcalkins at charter.net
Sun Nov 23 16:47:17 EST 2014


----- Original Message ----- 
From: "John Goerzen"
> Thanks, Art, I'll give that a try.
>
> Meanwhile, I believe I've tracked down my video quality problem that that
> little TV/computer switch thing that it comes with.  A slight bump on the
> switch means that the picture goes all wonky, and having an even passable
> picture requires it in a very specific position.
>
> The box is riveted shut, though, so I can't just open it up to clean it 
> very
> easily.  I suspect some dirty contacts maybe?  Does anybody have ideas on
> dealing with that switch box?  Is a box like that made for any other 
> purpose
> still?
>
> Thanks,
>
> John

Do without the box.  If your TV has a 75 ohm coax input get a phono to coax 
adapter.  If a 300 ohm input you need a 300 to 75 ohm balun and the phono to 
coax adapter.  On my CoCos, since 1984, I put the adapter on the CoCo end 
and use 75 ohm coax to the TV.
Bruce W. 


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