One day my 2017 spark was running fine, I shut it down for the night then went out the next day and nothing. No beeps and nothing nothing on the display. I checked the battery, fuses, start/stop switch and even changed out the lanyard knob kill switch with another 2017 spark. All checked good and no change with the other lanyard knob. Anyone have any idea what the issue could be and how to diagnose it? Any help would be greatly appreciated!! John