I had the same problem and after troubleshooting and looking over the board, I found a blown capacitor ( I think its a capacitor at least ).
I have a ton of older bit coin hardware, and some upgrade kits for block erupter blades, but I obviously need to find the right capacitance. Any ideas where I can get clarification?
http://abecx.net/bitcoin/cointerra.jpghttp://abecx.net/bitcoin/cointerra2.jpg
