Hey guys! Thanks for this lovely instrument. I'm having a very wierd kind of problem... When i plug in my drone it seems like the oscilator on the third voice (blue) seems like stuck and isn't creating a proper signal (its just generating a high and steady tone and if you turn on the vol pot the light gets a bit brighter the more you turn and if its over the middle it gets darker again). When i touch (either with the finger or a screwdriver) one of resistors on the back, for example R9 or R10, or certain pins tl074's its suddendly working absolutly fine! I already looked for cold or critical solder joints checked the values of the components, and bought new ic's. Nothing worked till now. Any ideas where to look further or troubleshooting tips? Or should i use more than 12volts? Thx in advance for your tips! Greetz