ATEM Mini ISO Pro - dead input?

So I cannot get the Input 2 on my Mini ISO Pro to work at all. Doesn't matter what I plug into it - I can swap the same cable/source over to any other input and it works fine.
This seems to be a common issue with these things. I know it's not my HDMI cable or cam settings, since the exact same source will work on other outputs. My firmware is completely up to date.
Is there any hope?
This seems to be a common issue with these things. I know it's not my HDMI cable or cam settings, since the exact same source will work on other outputs. My firmware is completely up to date.
Is there any hope?