Tom & Clap ground loop noise/hum noise

Hello
I assembled complete yocto2, all part is working.
but L/M/H toms&Clap section is noisy.
Yocto1 is dead silent in comparison.

Please tell me How to fix ground loop noise/hum noise.

Thanks!

voltage of the power line shows ±15v ±5v ok.

I discovered a symptom similar very much in a topic of nava.

>[solved] Bass Drum BUZZZ
viewtopic.php?f=24&t=889&hilit=hum&start=30
https://www.dropbox.com/s/14f6a70too20u ... z.wav?dl=0

It is the same as buzz to hear from my yocto2 clap & toms.
Do you not hear buzz from your yocto2?

uploaded buzz to hear from my clap part track.
clap volume 0%→100% repeat
https://www.dropbox.com/s/vbjbrwaope54y ... z.aif?dl=0

this could be due to bad wiring. Try a better quality of cables

Thank you for a reply.
I confirmed that noise doesn't occur in BD/SD/RIM SHOT/COWBELL/HHT in YOCTO2 using this cable.
Also I confirmed that all section was noiseless with the same cable in yocto1.
I don't know why buzz occurs to only crap and toms.
Is there the recommended cable?
Does your yocto2 have the noise?

TKYK wrote:Hello
I assembled complete yocto2, all part is working.
but L/M/H toms&Clap section is noisy.
Yocto1 is dead silent in comparison.

Please tell me How to fix ground loop noise/hum noise.

Thanks!

Did you ever fix this?

Unfortunately the problem is not settled,
Please help me!

TKYK wrote:Unfortunately the problem is not settled,
Please help me!

Maybe try out a different PSU. I had annoying hum with a cheap PSU I bought from China. These work good:

https://www.ebay.de/itm/OEM-AC-ADAPTER- ... :rk:9:pf:0

For the Toms in v1, someone found that grounding the switches case was helping, not sure if they aren't already or not.