So I received my miners (no late shipping refund yet) and 3 of the 4 are mining away happily at 350MHz. The fourth kind of sucks. It doesn't stay mining consistently and the fan stops randomly. Even with a separate fan blowing directly at it it does not stay active. It doesn't overheat as far as I can tell, just goes dead and stops mining. Weren't these supposed to be tested before shipping? Also, I never received the 4 extra chips that I ordered. I have emailed Steamboat about this and am wondering how long it will take to get a response. In the meantime, anyone have any ideas on how I can fix this thing myself? Would it be worth it to remove and reinstall the heatsink and fan? Or is this more likely a circuitry problem? Maybe firmware? I am willing to buy the pickit programmer if it would help. I welcome any ideas.