Quote:
Originally Posted by kbmuri
The checkerboard pattern in the light areas -- especially under the 'o' in 'Fort Wayne' -- is representative, I'm pretty sure:
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That's the chroma subcarrier you're seeing. Your monitors are in good working order, nothing wrong with them. And my mod to the CM7000 will remove it. Another approach is to just take an S-video cable, and cut it to attach to the luma line new connectors of the sort your monitors requires. S-video is a 75 ohm impedance system, just like composite video, only with the luma and chroma on separate lines. The luma has sync on it, and is exactly the same as black and white video.
Fry's Electronics had the CM7000 on sale for $60, if you live in a town with a Fry's nearby. Seattle, Portland, Silicon Valley, LA, and Austin TX has Fry's. Not sure if that sale is still on or not.
A less satisfactory approach is to insert in the composite video line a trap tuned to 3.58MHz. But that also will mess up the sharpness of the black and white.
nasadowsk, building a homebrew box would probably involve writing code to program the decoder chip, which makes it a rather big project. And that it's mostly surface mount chips makes for more fun...