I could not get continuity between Pin 21 and any of the other pins.
I've uploaded several pics of my board just in case. I don't know if it will be useful but it's there for reference.
http://www.imgur.com/a/jMxhm
Message
Re: Apreggio, Chord Mode, Unison, Poly button do not work. Help?
2016-04-30 by chrismitchrocks@yahoo.com