Defective Behringer RD-8 received today - bought new [2/3]

This is #2 of 3 videos I just took of a Behringer RD-8 I received as a replacement for a damaged one, which had been thrown over the gate where I live. Unlike the first one, this one was put directly into my hands by the driver, but all to no avail. It played only the BD and Ch when I started it up, following a video user guide someone had put on another video hosting site. That video clearly showed the user able to trigger all the sounds on his RD-8.

After playing around with MUTE and SOLO I was able to get a couple more sounds to work, for no logically apparent reason because I did the same to all the sounds, as will be shown in the next and final video.

Here the Conga and Low Tom exhibit a strange clicking sound, which is not me hitting the pad as you can hear when I hit the pad trying to coax other still not working sounds out of the machine. The Closed Hat works but is very very faint. I played an open and closed hat on a Jomox XBase 09 at the end of this clip for comparison, both run into a DAW at exactly the same levels.