I'm having problems in my setup with noise coming from midi controllers with leds (Launchcontrol XL, Nanokontrol) so I was trying to find out what makes the nosie better or worse, plugging in and out different elements of the setup.
When I was unplugging the dc plug of my axoloti boards it didnt turn on again afterwards. It still gives 5v to the usb controller but doesnt turn on again, no blinking.
I've been using the power supply for a while now, it's 12v 2a, positive center powering two axoloti boards and a small mixer via a daisy chain. I've been using it this way for quite a while and never had any problem.
It's quite frustatring because I was finally arriving at a point where I could actually make music with this setup