I was not sure where to put this post, since it did not fit neatly into any of the other categories. I was recording some local music last night, and because of how generally fucked up the PA in the club is, I was running one channel from the board, and one mic in the room, both going through my V-3 into my 722. So, today, I move the show over to my computer, and in the last two songs, it appeared that the board channel got cut. I initially assumed that my cable had somehow got yanked out of the board, which was behind the band, but I did not see it happen during the show, so I did not realize that there might have been an issue until today.
But then I noticed that channels meter flicker just a tiny bit. So, I added 20dbs of volume, and then another 20 dbs, and lo and behold, there is a feed that went through that channel. Due to the noise floor also being raised so much, there is a significant buzz that will make it difficult to use. But, I am more concerned with how a channel that was not disconnected, did not need phantom power, somehow ended up having this super quiet signal. Has anyone else ever experienced this, and if so, what was the cause of the problem?
Any help would be appreciated. TIA.