Powerarp not working

[mavsci]

Hi guys, I just bought a 2nd hand Juno-66. Extremely happy with it, but for some reason I can't seem to get the powerarp to work. I'm following the exact steps in the demo video and manual, that is:
1. While holding down KEY TRANSPOSE, press the ARP button until the key transpose starts blinking
2. Play a sequence
3. Press the KEY TRANSPOSE button again to exit recording

Then when I try to play the arp by pressing the C3 note (or any other note, i've tried them all ), I only hear the first note of the recorded sequence being played. In the demo video the creator of tubbutec does exactly the same thing and the arp starts playing, but not on my juno

I also set the arp mode to "Internal" in the config menu. Whenever I try any of the other arp modes (midi clock etc) I don't hear anything when pressing a key on the keyboard.

I'm probably doing something stupid wrong, but can't seem to figure out what it is. Anybody?

[csiprophet]

ARP seems somewhat buggy. We're still waiting for Tubbutec to fix some ARP issues we reported a year+ ago, thanks Tubbutec.