|Shutter problem is being discussed in the ControlBooth Lighting and Electrics forum; One of our Martin Mac 550's is having a dimming problem. It looks like the motor is sticking. We tried ...|
IIRC, the motor you are talking about is a stepper motor. And I would guess that one of the coils died. Unfortunately there's not much you can do about it, except replace it.
fixture. The problem would be with the motor, we checked the harness.
Any Martin dealer can get them or you can order them from light parts, LightParts.com - The Parts and Repair Source for Entertainment Lighting