The H90 should receive voltage on the tip. Can you provide more information about your setup? What are you sending CV from, what type of cable are you using, etc.
I’m sending from ZOIA, which sends on ring, and currently using TRS->TRS. So, the first thing I need to try is a splitter or adapter to move ZOIA’s ring output to H90’s tip input, and also rule out the possibility of a bad cable (unlikely). I’ll order a splitter or adapter today, and should be able to try that this weekend.
Thanks everyone for your speedy replies!