I posted here a while ago but no answers:
https://elektrotanya.com/comment/reply/91852#comment-form
Made some good progress, but there seems to be a sync problem.
I posted to the EEV blog for more help:
https://www.eevblog.com/forum/projects/rgb-mod-in-panasonic-ctp-2780sf/msg5615065/
Any help or feedback appreciated.