[Coco] CoCo2 black and gray video only -- need help!

[Dave Philipsen]

Well, there are a variety of things that can affect crystal accuracy 
including how strongly the crystal has been driven to oscillate in 
circuit. But given the fact that I have at least 5 CoCos with original 
crystals and they all still are in range to display NTSC color, then we 
have hope that we'll find a crystal that will work.


Dave


On 10/23/2021 12:08 AM, Gene Heskett wrote:
>
> So also will be the "new" one, as its probably been on the shelf
> gathering dust for 30 years. The drift degradation is elapsed time, very
> little to do with operating hours in that time. tc1 at minimum or
> removed might put it back in range.

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