I assembled the Shruti-1 following the guide and it went perfectly. The synth functioned for a few days and then i decided to take it with me on a short trip. My plan was to learn the sequencer and dont use any external keyboard. i plugged in a pair of headphones (stereo plug) and held the s1 to start the sequencer but got no sound. I fiddled in the system menu and changed some of the settings around with no success. When i plugged it in today with a mono cable and midi-keyboard i got no sound at all.
Is it possible i damaged something by plugging a stereo-plug into a mono output? Maybe the wrong filter setting in system the system menu messed up something on the voice-card?
The controls and display seems to work fine. If i turn the volume up a lot i can hear the oscillator very faint. It responds to midi in tone changes and i can edit the waveform. If i tweak the filter cut-of nothing happens. When i tweak resonance every step of the encoder produce a short snap of digital noise. The envelopes does’nt seem to trigger either.
Any idea where to start looking for errors? (I know next to nothing about electronics but i have a voltmeter and can follow instructions
I had forgotten to solder some of the legs of the small IC-socket closest to the connection between the boards. After fixing that it works perfectly!