[Coco] RGB Monitor Problem (Magnavox)

[Travis Poppe]

Would any of you know what might cause this behavior with an RGB monitor?
Is the monitor flat out incompatible, or might this be a cable thing?

You can actually make out that there is text on the screen, so something is
working.

Warning: This video contains flashing lights (sort of.)

https://photos.app.goo.gl/ky9yjYWfQeDfee2n2

-- 
Travis Poppe
IRC: tlp on irc.freenode.net