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Trommel Maschine D Out

I don't think my Trommel Maschine is working properly, but I'm not that familiar with what it should be doing. The A out seems to be working and noise, but with those two turned down I can only get some faint noise from the D out

5 comments

Kommentare (5)

st-modular

Sep 19, 2023

Hey Andrew, focus on UC1 and surrounding parts. There some suspicious solder joints on UC1. If you send me your e-mail (either by adding it to your profile or by email) I can also forward the schematics.

Thanks,

Stefan

Andrew

Sep 21, 2023

Replying to

Stefan,

I think I will need the schematic. My email is in my profile. In trying to fix it, I think I might have damaged some traces around UC1.

Thanks

Andrew

Sep 22, 2023

Replying to

Significant improvement, thanks. The problem I was having was some solder bridges I hadn't seen on IC3. I think noise might need some adjustments, it doesn't do much as an individual out, but getting the d_out working makes this immediately useable.

st-modular

Sep 17, 2023

Hey, it seems like you are not in the correct mode. Have you read the instructions in the BOM how to choose the two modes for the digital drum?

Andrew

Sep 18, 2023

Replying to

I've read them, but I'm not sure I'm following correctly. The led on the back should be flashing? No matter what combination I get nothing out of just the d.out. Also, the D.out is constantly on when the volume is up, but when I plug a patch cable into the d.out the light goes off.

I've reflowed a couple of time, but any suggestion where I should be putting attention?