I've been noticing that sometimes my volume is just cut to nothing all of the sudden and today while playing, I stopped for a second and I think I heard a relay switch on the M5. In the past, if it was practice or live I would just panic and hit the same patch switch I'm already on and the sound would come back - i really didn't know which device in my chain was causing it. So today, I had a second to bypass each device individually and it's the M5! I got the volume to come back by clicking one of the switches.
What's going on here? How do I stop this? Is it broken?