Odd CV1000 Issue

[Arcade-Projects]

My deathsmiles developed this issue while I wasn't using it.... it's missing a few lines at the top, with R/G/B stripes.

Normally I would expect this to be a monitor issue, however other PCBs work perfectly.
(pictures in imgur link)

My natural inclination for this would be that this problem is post-render, and somewhere in the RGB encoding or transmission hardware.

Does anyone have any thoughts or experience with this sort of issue, or any CV1000-specific advice?

Thank you so much for any help.

imgur.com/a/GH3PVqa

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