http://ecointalk.net/topic/392-black-arrow-weekly-production-update/page-520blackarrow #10385
Posted Today, 10:39 AM
In the last few days there have been increasing reports of X3 units that have failed during hashing.
We have now located this issue: It has been introduced by a part that we have used in our latest shipped batch (shipped between 20 Oct to 13 Nov). All miners affected by this problem have a barcode sticker (picture will be posted here:
http://www.blackarro...y_hashboard.jpg. We are currently sending individual emails to all customers that we believe that are affected. If you have not received an email but are concerned that your miner is affected, please open it and check if your hashboard has such sticker. If your miner is affected, please stop using it immediately. If you do not stop using your miner there is a very high possibility that one or more hashboards will burn. We are now testing new hashboards in which we believe that we have solved the problem. We will send new hashboards to all customers as soon as tests are conclusive. Alternatively we can make arrangements to host your miner in our partner's datacenter in China that charges an all-inclusive fee.
We are deeply sorry for the inconvenience.
Technical details: On the latest batch of miners we started to use a different mosfet because of higher efficiency and better sourcing availability. However, to achieve this efficiency this mosfet lacks a diode that protects it from short circuiting the 12V with GND in case there's a wrong message received from the controller. A wrong message can only be caused by the noise in the circuit or by a faulty controller. We have encountered this issue back in May but we have been working with Vishay (the manufacturer) to fix it. Initially, when we found the issue, we wanted to return the chips but Vishay declined to take them back claiming that they are considered safe to be used in consumer electronics and Sony is using them in PS4. Upon applying the changes in our design based on their advice and after testing more than 20 miners we believed that the problem has been solved and started manufacturing miners with these chips. However, it turns out that the problem is still there and in some unknown cases it happens and the mosfet burns, causing a short circuit which heats up the board and sometimes melts the PCIE connector.
So you're saying a bug in your shitty software causes your shitty hardware design to burst into flames. Why not send customers the same solution you use in your mining farm? You know the one where all the used Bitfury boards (minus PSU) you have for sale in-hand on your website come from. Let me guess you're still too busy mining with the original batch of customer X3 hashboards you produced in May?
yep.
first there was a data center, then there wasn't, then there was and rent-a-minion was ready to roll. again.
now there's a partner. well, that's new.
who is this "Partner". wouldn't happen to be XBTec, now would it? You know, the same folks that bought the customer database. or stole it. or something that neither of them seems inclined to talk about all that much and neither is doing a damn thing about while one of them is acting in an easily provable illegal fashion.
meanwhile leaked chats quote Josh Zipken of AMT saying months ago these guys were mining with customer equipment in the 'now you see it now you don't datacenter'
they deny that claim of course, but they've told so many versions of this, and everything else, that there is absolutely no way to believe a single word that comes from their mouths.
the one thing I'm crystal clear on is that these people are lying sacks of shit. Sovu is a credit card fraudster and they've been lying about one thing after the next since word 'go'
could they be mining? Absolutely. They are bogus, deceitful, crooks that couldn't give a shit about their customers, so if they can be they are. little doubt in my mind.