MTRX Studio - is this output channel cooked?

[TrentWilliams]

Some time between Christmas Eve and today output channel 9 on my MTRX Studio has started doing this:

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https://www.dropbox.com/s/uci9ehcmvy...l%209.wav?dl=0

I've spent the better half of a day trying to get my head around it, now I'm starting to think it's a hardware fault? Looking for confirmation from someone more intelligent than I am. All the other channels on the same DB25 snake are working fine and I've confirmed that it isn't the snake itself *same issue if I swap the DB25 snakes out.

It won't pass audio, it just outputs this noise.

Any help or advice is appreciated, thanks!