Anushri No Sound

I completed my Anushri a few months ago, but I have yet to get any sound out of it. All of the lights turn on, and the MIDI signal light lights up when I press a key on my controller. But there is no sound. I’ve tried all of the outputs, and the test tone generator with no success. This is only my second project and I have only the barest understanding of electronic circuitry so if you can help please be gentle, I’m a total noob.

Huge thanks in advance to anyone who is kind enough to help.

Post a photo of your assembled boards. Measurements worth checking, and a few test points, are listed at the end of the build instructions.