Hi,
I have quite the same issue with B9, although I am powering it only with EHX Power Supply.
Sometimes it works, sometimes not. When it is not working : the signal goes through the pedal with a little distortion and when I engage the pedal : NO SOUND.
Even if I try to touch the button etc…it stays like this : not working.
After that I let the pedal off some days without power…and sometimes it works again normally
Please explain and help me.
Best regards
Ryan from France