Yocto 1.0 won/t play, multiple pattern select buttons light

Discuss Yocto construction and related issues
  • I'll leave this up just in case it may help someone in the future, but I ended up suspecting that I broke a trace under a socket while removing the old IC's so I pulled the new sockets and that's exactly what happened. it was positioned perfectly so I couldn't see it with the socket installed, and just the tiniest nick with a screwdriver that split the trace. Oops. Now to see if it works in expander mode!
  • Final update- I replaced all sequencer shift registers with new ones and my Yocto works 100% perfectly now. I'm not sure what happened that fried them, but all is well at this point. The symptom was that no mater what MIDI note was sent while in expander mode, all of the cymbals would trigger.

    If you end up having to pull IC's be very careful while prying them up, most have traces running underneath them in the area you will be prying on.