King_Distortion

I HAVE A BIG BIG PROBLEM... One day when I was rehearsing in my spider IV, the display screen looked normal, well, nothing was wrong with it, but at night, damn !!! in the middle of the concert, I felt an emptiness in my stomach, my Spider IV Display will delete only half of the preset name it looked, and try the factory reset but no change ... what happened to it ??? ?? anyone can help me ????