I populated the LED point closest to the front of the board (next to IC8) with two white LEDs (beast eyes) with the same supply/ground, and I populated the other LED point with a blue LED. I used 220R for both.
I’ve noticed when the beast eyes LEDs are lit, there sounds like a very faint square wave. This doesn’t happen when the other LED position is lit. I’ve even disconnected the eye LEDs, and the noise continues when the eyes should be lit. I tested by droning a note, then turning the mod wheel all the way up, and setting the modulation amount on patch 12 to 0. This way it will clearly alternate between lighting the two LED points.
Any suggestions on how to mitigate the noise?