Home › Forums › Products › Stompboxes › Problem when using H9 with Line 6 Helix › Reply To: Problem when using H9 with Line 6 Helix October 10, 2018 at 2:45 pm #150282 nickroseModeratorEventide Staff I'm thinking that you have a bad cable or a bad socket such that one side of the MIDI is connecting to ground on the H9, and when you connect your jacks, this shorts it out. First step – try different MIDI cables.
