[amorlando]

Is there a PSU for the leds that could have gown bad?

exactly. we have many dcommands and this is what happens when the switch mode power supplies fail. as the suppply ramps up to operate, the current draw from the LEDS puts the supply into protection and recycles the power. about every 1 second exactly. the good thing is that these control surfaces use a seperate supply for LED, Logic and motors so although the lights are crazy, it will still control the software and the faders will still move.