Hello List, Just to share....While searching for a dead note on the Swell (Rodgers 220-II), I checked and re-checked every components in the chain...the scope was showing a nice sine curve everywhere....I also looked (visualy) for a broken connection or bad solder.....I finaly found the culprit: a broken connection between a resistor, on one side of a card, and the busbar on the other side....The original solder, on the bus, looked very good, bus the connecting wire was actualy broken right inside the card tickness....This using the buzzer position on the multimeter... Best regards to everyone.... Jean