After dropping my accordion, the bass part starts to have sound coming out without me pressing the buttons. This happens both when the bellow is pushed or pulled. I took out the mechanisms, and tried pushing and pulling below with only the valves and there's no sound. But when I put the mechanisms back the sound is back again. I looked at common accordion failure modes but I don't think my problem matches any. The bass mechanisms seem to not have damages, as seen by a novice accordion player like me. I am intrigued by accordion mechanisms and want to try fixing my poor accordion.
- What are the common cause of this problem?
- What are the steps I can do to better diagnose?