As im playing every so often, all the lights and the screen on the whole unit blank a couple times. I don't notice the sound or signal changing. I also noticed I have one loop (loop 5) that sometimes that when I click the button, sometimes it works perfectly and other times the entire signal goes away until I turn the loop off. if check the cables and power to the pedal (Julia) and everything seems fine. any thoughts? tour starts in two weeks, please and thank you.