I’m working on my Octave Cat and I’m a bit stumped. I originally had an issue of blowing fuses, but was able to swap out enough components to fix that issue, but now I am dealing with a drone sound that doesn’t respond to the keyboard or any of the controls. I have a few more parts on order from Syntaur, but I am wondering if my issue could be that I am only getting -12.4 volts on psu pins 5/6. However, I do have the full -15v coming off of the voltage regulator. Pins 3/4 are reading 15 volts. Any thoughts from any of you experienced folks out there? . I already replaced all of the caps on the psu as well as the voltage regulators, but still running short of -15v for some reason. Thank you in advance for any guidance.