Yamaha DTXpress/DTXplorer/DTXtreme

Hi

So there I was, banging away on my PCY65 ride (with a DTXpress III)
and it tinged. I could get my usual ride cymbal sound and then
something that sounded like the bell part, and logically it was near
the top of the pad.

That's never happened before.

It's not reliable, I can't work out how to cause it to happen
reliably, but then in the middle of something (after having rebooted
the brain, so it shouldn't be a software glitch), there's that 'ting'
again.

That pad's not a two-zone is it?

Any theories?

J