GLSP3022 is right.
For many years on the really big displays in games like Maverick, Batman Forever, Baywatch we have been replacing the 3 pin connector with a Red and a Black wire on it in order to get good power to the display driver board.
In the past year or so I'm seeing quite a few smaller dot matrix displays with intermittent display problems that are caused by this plug not supplying sufficient power.
Replace the 3-pin plug with trifurcon, and I'll usually replace the pins on the board at the same time.
This is fixing a lot of problems in various older DMD Data East and Stern pinballs.
However, for Star Wars I've replaced MANY ribbon cables to the display.
This is looking like the 3-pin power connector to the display, but if that doesn't fix it, get a fresh ribbon cable.
Good luck!