I just got a Fireface 400
When i first opened the mixer I noticed ch 3 (an+3?) had a steady level of output.
when i finally figured out how to work the routing it sounded like a loud clock signal (like maybe a fast fluttering 880hz "A"  pitch square wave? a wild approximation.)
I power-cycled the device and now it's gone and hasn't come back.
Just wondering what type of config could make that happen?
thanks
Josh
Denver, CO