Check the Volume knob is not set at zero. Check that the correct MIDI receive Channel is selected. Check that all mixer parameters are not set to zero. Check that a Volume MIDI Message of zero is not being transmitted to Nova. Check that the Filter Frequency knob or Sustain and Decay knobs of Env1 are not set to zero. Check that Local On/Off in Global Mode is not set to Off. Check Arp Mute is not active. ( lit ) Check Part Polyphony is not set to Off. Check Pass to Effects parameter in Dist/EQ/Config menu is not set to Input 1 or 2 but program. Check that the Arpeggio notes to: parameter in Arp Menu is not set to MIDI only. Check Part levels in a Performance are not set to 0.