i believe this is the same issue we had with the MF classics at times when only the top left led would light up and nothing could be done until you reset the controller by pressing the buttons on the back of the unit with a pin and then running the mf update software, is that correct midifidler?

since you guys have managed to solve this i would like to find out how this is solved in case this happens at a club when you set up. could you publicly describe what to do when the spectra blocks out?