I am using a digirig lite with a Kenwood TR-50S. It worked great after Denis helped me with some settings suggestions.
I tried again today but couldn’t get the audio inputs to show up on the toughpad. I then noticed the input interface was so hot I could barely touch it. Is it fried?
It’s a good possibility.
Let it cool off and try with some other computer and/or without radio connected.
If it gets hot again in every case, then it’s likely in need of service.