I am using the slush pool proxy and having the same problem, my cube will run from any where from 5min - 1.5 hours then the relay kicks off and the power to the board turns off. The power to the fan stays on. I have tried two brand new power supplies. 1 thermaltake smart 750m and a corsair rm850. same issue with both power supplies. I also have not been able to find any information on firmware updates or any type of fix for this issue. Have you found a fix for yours yet?