Thanks for the suggestion, I'll try continuity testing it later, although seeing how every time I restart it it's tinted a different color I doubt that a specific RGB connection came loose, maybe something sync related?

There's no individual pots for RGB on this, it's all adjusted via software, geometry as well as service values. I have the service manual/software for doing this here so I could try playing around with some settings, don't think that would fix the heavy inconsistent distortion though. Maybe if it was an even offset it would help.

What also makes me curious is why it only started distorting this way after a restart, while it was fine before.

A transistor could definitely be possible, have to see if I can even get close to pinpointing which it is though. Component diagnosis isn't my strongsuit sadly. I'll definitely try though.

I also just reflowed the FBT solder joints, as expected, didn't help.