Quoted from dothedoo:Just noticed in the video the way the tube lights flash after you hit the pop bumper. That's the exact same behavior as when the ball rolls over the tube exit switch.
Put the ball in the mota saucer and see if the background sounds start again.
My guess is that is the case as well. I remember seeing a YouTube video some weeks back with the exact issue, and I replied with the same response. I wonder if it's the same machine?