Has anyone ever had one of these drivers in my case for a 500mw 532 fail where it just power cycles it self off/on/off/on ? I don;t belive it is a head issue as it does the same thing with the head disconnected unless that is how they act when the head fails. Trying to determine how to handle the mess and would you know it 2 weeks from SELEM, starting to wonder if its another sign i shouldn't pursue making the trip.