Hi all. I recently set-up my home made pedal board. I am running four pedals (all 9 volt) with a joyo jp-01. When all were connected before adding them to my board, all was well. Now, however, when plugged in none worked until I unplugged one and then plugged it back in. It didn't matter which one so long as one was unplugged and then plugged in again. Why would this be? It makes no sense. Any ideas would be greatly appreciated. On a side note, once the juice is flowing all works well with no noise. Just strange how it takes the unplugging and plugging of the power supply to one pedal for the whole thing to work.