Turned on my TCL Roku TV this morning and all of the colors are wrong (possibly inverted?). I've read through a lot of forums and have:
Tried to adjust in settings, Unplugged from the wall, factory reset, unplugged again and nothing has worked.
This is a Roku TV, nothing is plugged into any of the ports, so it isn't an hdmi issue.
It worked fine last night. Less than a year old TV, pretty bummed.
Since you tried everything else, you'll want to contact TCL support: