Reply To: No Power at D2… What am I missing? Shop › Forums › Altura Theremin MIDI Controller Forum › Altura FAQ & Support › No Power at D2… What am I missing? › Reply To: No Power at D2… What am I missing? December 18, 2021 at 12:59 pm #32639 poornessParticipant Another graphic to help visualize… It seems to me that there are 2 problems going on: 1) 9V power not getting to the switch, 2) switch not conducting. I’m going to hold off on removing the jack for now. I’d like to hear what you folks think.