Hi, I've bough a Helix Floor "ex-demo" yesterday. It all works perfect, display, switches, pedal. All.. but I heard immediatly a big problem: the hum/bzz when I select a block (even empty). The hum is lower if I select "none" input on display, but it's still there.
Tryied update firmware, reset, changed power cord, changed cables, guitars, amps, ground lift button, nothing changed. Bzz/hum stills here.
What can I do? Should I return it to online shop where I bought or it's normal for Helix to have this problem?
I'm using Helix on 1/4 output direct to my amp input.
Here are 2 videos of the problem. You can hear the silence when I turn off Helix.
(This with block hum, empty patch, it disappears when I set to "none" input)
(This when I turned off Helix. The amp is quite silence if I use guitar - amp)