Topics

1

preenfm2 and preenfm3 / PreenFM2 midi problem with Beatstep Pro

« on: January 18, 2023, 04:39:21 PM »

So I'm having an issue when connecting the FM2 to the Beatstep Pro where if the instrument is being controlled via midi channel 1 it will play just fine on the beatstep. As soon as I hit the record button on Beatstep the value of OP1 Oscillator frequency for instrument 1 goes to 10.5 and then back down to zero if I hit record again. It only affects OP1 Oscillator frequency for instrument 1 and it only happens on midi channel 1.

I can't figure out why thats happening.

I'm using firmware 2.09

Thanks!

2

preenfm2 and preenfm3 / [solved] Preen FM2 loud noise, barely hear synth

« on: January 11, 2023, 01:10:33 AM »

Hello I have the Preenfm2 RD5 board.
My output is only giving nothing until I am in the top 90% of the volume pot and then it's only producing white noise and very faint synth notes when using the instrument + button on left method to hear it.

I scope traced the noise back to the opamp but not sure if its before. Hard to trace this board. I was wondering if I could get some troubleshooting help or the schematic for it?
Also, is there a layer of trace in between? One of the pads burnt out on one side of a switch but it's functioning. Wondering if theres a connection in the middle of the board, not just front and back.

Thanks!