Hi @Zukane -
Welcome to the forums!
Sorry for the issue…
You should definitely avoid running your ROV sealed on the bench for very long, overheating can be an issue for an underwater vehicle on land!
It sounds like your system may be suffering from a damaged camera. When was it purchased? It could be affected by technical bulletin 12…
Performing a network test is a good idea to verify the tether is ok, and installing the tether diagnostic extension and sharing a screenshot of the extension page showing the tether connection health is also a good troubleshooting step!
Can you share what version of BlueOS and ArduSub you’re running?