Quote from: miner_btc on December 14, 2013, 03:44:25 PM

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.

Quote from: fasmax on December 14, 2013, 04:01:41 PM

See what happens if you run at 340mhz maybe the one unit doesn't like 350mhz.

I guess I should have been more clear. The 4th miner exhibits the same behavior even at stock speed of 282 MHz. It also crashes cgminer when it is connected along with the other miners and recognized by the program. I have tested each miner individually and with the others and this one is the only one that shows any sign of having these problems.