Fast answer
Stop the sequencer and move the VCA switch to EG, as Moog's troubleshooting checklist advises.
Try these checks
- Check whether the sequencer is running and stop it with RUN/STOP.
- Set the VCA switch to EG rather than its continuous-output position.
- Release the keyboard and check the result before changing the MIDI setup.
Diagnose it
Is the VCA switch in EG?
Yes: Check whether the sequencer is still running.
No: Move the VCA switch to EG for this check.
What should happen
The checks rule out the continuous VCA mode and running sequencer as causes of the drone.
Why this happens
Moog identifies both settings in its continuous-sound troubleshooting.
If it still doesn’t work
Check the connections and settings described above. If your device behaves differently, email us with its model, firmware version and the steps you tried.
All Mother-32 fixesMore about Mother-32
References
Sources & review
Sources reviewed: . Documentation does not replace a physical hardware test.
- Mother-32: why won't it stop making sound? · Moog · Official Mother-32 troubleshooting article · last checked 2026-10-07
Sections reviewed: Continuous-sound troubleshooting checklist.