singingzoologist wrote:My last-ditch effort is to get a USB-C to HDMI cable and cross my fingers that I can monitor through that USB-C port.
Don't waste your money, this won't work.
Have you tried the HDMI output with a known good working TV? Many cheaper monitors are very fussy about input resolutions. Are you getting a picture now, just no audio or is the output completely blank? If no audio, are you 100% that a good level is being passed through the Atem and all your cables are correct? (If you have a balanced-to-unbalanced cable issue this can result in screens with a single speaker not playing any audio, even if people with stereo speakers can hear clearly).
That said, we have had a couple of Atem Mini's sent back with broken HDMI outputs and replaced under warranty. If you can't get a signal to any screen then I'd be getting in contact with support or your retailer.