Trigger Maintenance

Information supplied by David Haney (Zendrum)

Use your thumbs to press down around the edges of the trigger caps VERY hard. This will reseat the caps to the piezo elements underneath and should brighten up the response. If you notice that the rubber grommet shock mounts are not resting flat on the surface of the body, you can carefully put a thin, flat screwdriver under the edge of the trigger caps and pry them up a little to get the grommets to sit down, flush. There will be some experimenting back and forth to adjust the shock mounts and keep the sensitivity as hot as possible, but as long as you're careful with the instrument's finish, here's nothing to damage.

I have on occasion, seen an older Zendrum come back for service or upgrade where the rubber grommets were actually sitting up off the body by 1/4" or more. These are from when the triggers were not glued from inside the instrument and indicates the age of the instrument to be pre-1996 (Datawheel model). The fix for these older grommets is to press down hard with one thumb while turning the entire trigger with the other hand. After a half turn or so, the trigger should "pop" back down flush and be stabilized.

If any of you have specific concerns regarding this process, please don't hesitate to contact Zendrum for support, and you will be coached through it.