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Euphoria Primary Osc and Reverberation Board issues

Hey Stefan,


I'm in the final steps to finish soldering the Euphoria boards. Today was a special day because all neccessary boards for making a sound were finished - and making sounds it did :)


But it seems I have an issue on both the reverberation and the primary oscillator board. Turning Reverberation to wet seems to only distort the sound - nothing seems to get send to the reverb tank. On the other hand I can "play" the reverb springs by hand and hear them loud and clear.....I've ordered an Belton brick to check if the problem persists using that.


And after fixing a faulty power diode on the primary osc board I've got sound from the tri/saw but nothing on pulse and sine.


Long story short: to simplify the troubleshooting I'd like to ask you for the schematic so I don't have to trace everything based on the IBOMs.


Thanks in advance

Andreas

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st-modular
st-modular
Feb 02, 2025

Hey Andreas, It seems like the issue could only be related to U44, C206, R496, C205, the Gain Trimmer, or the RCA connector/Tank Connection. Have you double-checked the values of all the components after replacing them? Is C205 oriented correctly? Also, how are you connecting the board to the Tank? Cheers,

Stefan

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