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Author Topic: Problems with BFL ASIC 60GH/s miner  (Read 1507 times)
bitmorsels
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February 08, 2014, 09:57:52 AM
 #1

Hi all, a couple of weeks ago I purchased from Ebay a Butterfly Labs 60GH/s Asic Miner. It arrived Monday, but since then a nightmare has started.

The PSU was not the original one that can be seen on several YouTube videos, but looked like a normal ATX PSU with the required two PCI-E connectors. Never mind, I tried and connected it to a power plug, but I didn't realize that it was only compatible with USA voltage (110-120V). I live in Italy (220V). The PSU died in a couple of seconds.  Sad
OK, I should have checked, but I had never seen a PSU which wasn't compatible with the 100-240V range, and I didn't imagine that such things could be shipped by a vendor who sells worldwide...  Angry

Anyway, my worry was that the miner could have blown up as well, so I tried to buy another PSU. At a computer shop they kindly helped me doing some tests with a candidate PSU. We first tried connecting it to a motherboard, since the ATX PSUs do not even start if the MB connector is not closed. Good news, the miner turns on, bfgminer starts and sees it, going steadily at full speed for at least 10 minutes. The USA PSU had the MB connector closed with a handmade bridge between the main power pin (sorry I don't know the exact English terminology, however, it is the green cable) and a ground (black cable). We tried to transfer this bridge to the new PSU. Apparently it worked, because with no device connected it started seamlessly, but when we turned it off, and tried it with the miner plugged in, it just managed to turn on for a couple of seconds, and then the  PSU auto-switched off. A quick search over the internet suggested that the possible cause is that some PSUs need to feel a 5A load on some pin of the main connector, but now I'm stuck since it's nonsense to buy a motherboard only to make the miner work, and I cannot try to put the PSU on a desktop PC since I have only laptops.

Can someone suggest a way to make this PSU work anyway? Or alternatively whether there are other PSUs which are known to work with the BFLs devices?

Thanks in advance for any help.
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vpasic
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February 08, 2014, 10:49:28 AM
 #2

I have Thermaltake PSU running nicely on my 60gh unit with paper clip trick on this photo

http://marcomiltenburg.com/wp-content/uploads/2011/09/ATX-Power-Supply-Connector.jpg

Tips: 1Ejj8eANy2PLZVwrWUczkbQ8kQY2JhKqp6
southerngentuk
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February 08, 2014, 11:25:25 AM
 #3

If your hand with a soldering iron get a second hand server supply on ebay

something like a DPS-500CB there dirt cheap.

cut the leads of your dead supply and solder them up.

check google for there pinouts and a guide.

They dont care about ur 5v

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February 08, 2014, 11:46:36 AM
 #4

Any 350+ watt computer PSU with PCIe connectors will be able to power a 6-GH single.  As you noted, the shorting plug/wire will be necessary for the PSU to turn on.  Your best bet is to buy one at your local computer store if they stock them.

Edit: Make sure there are at least 2 of the 6-pin PCIe connectors on the PSU you purchase, the amps pulled by the miner could overload a single connection.

I do not suffer fools gladly... "Captain!  We're surrounded!"
I embrace my inner Kool-Aid.
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