[Coco] CoCo 1 composite

[Richard Lorbieski]

I found a source for the RF modulators:

http://leftturnonly.info

I order a couple to restore a couple of CoCo1s.

-----Original Message-----

With the recent post asking about CoCo 1 composite video, I decided to build the circuit shown on Hack-a-Day. I have a CoCo 1 with RF video that doesn't work.

I'm pretty certain I built it correctly, alas, I wasn't able to get any video.

So either, I built it wrong, the circuit has an issue, a part(s) is bad or the CoCo I'm working on has some issue, hence the RF problem. I did try swapping out the MC1372.

Has anyone built this circuit?
https://hackaday.io/project/7613-coco-1-composite-video-output