[Coco] CoCo 1 composite

[Carlos Camacho]

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

Carlos