Turning the following up should give you a sound: osc1 level, mixer 1 vol
a, output a vol
Tried that and still the same result ie no real sound to speak of.
I do get a (unwanted) popping noise when I adjust the dials and a slight
(almost inaudible) thud noise whenever I send a note but I get the same
(lack of) sound whatever waveform or settings I choose.