I reset the 200 with the same results. Failed. As for history; the 200 is brand new. I bought it in the fall but didn't install it then. I suppose it's still under warranty.
What other information would be helpful?
Do you think having two Obihai devices on the same router might be the problem?
Having two (or ten) OBi devices on the same local network works fine; that's not your issue.
If you bought it from an authorized retailer (Amazon, Newegg, Fry's, etc.) then contact Obihai and they'll replace it under warranty.