Hello again, Alan and everyone,
I swapped over the cables and that seemed to isolate the problem (the kick sounded through the snare but not vice versa, so at least I know that it's not the kick cable). I checked the trigger settings, but the kick still doesn't sound. I'm waiting to hear about a replacement, but in the meantime, I'd just like to ask if any other brand kick drums are compatible with the dm10.
I'm still happily drumming away, even minus the kick (actually I'm finding that just the acoustic sound helps me check my beat and accuracy).
Many thanks, Michael