5N cannot be started

My Drobo 5N stopped for no obvious reason (it just stopped over night) and I cannot get it on again. The green light on the power supply is on, but that is it. The toggle switch does not react.
What can I do?

Email tech support I guess. The main unit can die. Mine did in September, and the replacement died within weeks. I’m still waiting on tech support to figure out how to access my data again… Four months next week…