If they are like other intelligent lighting, you have to "home" them. Simply pushing a button that synchronizes all lamps and their gobos (color wheels and wheels with different shapes on them inside each unit). If it is more than that, a corporate decision might be, that since the lights do not draw in the crowd, they are not worth the investment of the repair. Unfortunately though that may be true, it does give it a "broken" or "run-down" effect, which in turn, is a negative. It's a shame it really does look incredible at night when it works.