So I built a Kraken, 2013 version some years ago and had a working pedal. It has been on the shelf for a couple years and now as I try it it does not want to work. The hi lo switch works and there is an effect on the signal just no quack. I am getting power. I checked for cold solder joints, reflowed a couple just in case, swapped ICs with others from my stash and nothing. Can someone tell me where the filter occurs and voltages for ICs and transistors?