Topic: ANTMINER S2 Discussion and Support Thread - page 129. (Read 355730 times)

I am sure they got delivered like this:

Shut off PSU by the switch on it.
Wait till it cools.
Restart.

Run heavier cable and in cooler area and/or on the floor or basement etc.

wait 10 minutes then try again.

I have a major problem and need troubleshooting help! Today all 3 of my 1TH/s miners stopped working.  One stopped working after mining non-stop for a couple of weeks (it was left alone and untouched) so it couldn't of been hit at all. I turned it off and back on, nothing. I ordered a total of 3 from batch one and today all 3 stopped working after i turned them off and back on! all i did was power down and turn them back on & the screen just displays a dark blue square, a red light & the fans always run full blast, I cant even see them on my network. I find it strange that all 3 decided to kick the bucket on the same day. Should I RMA all 3 i'm not sure what to do.

S1 and S2 are priced about the same per chip.  Ten times as many chips ten times the price.

I can't get how this comes to antminer topic? 

Advantage

Completely centralized place , no issuer , it is impossible to manipulate the issue number . Its issuance and circulation through open source p2p algorithm.
Anonymous , duty-free regulation.
Robustness. Bitcoin is entirely dependent on p2p networks, no distribution center , so the outside can not turn it off. Bitcoin prices may fluctuate , crash , many governments may declare it illegal , but the huge Bitcoin and Bitcoin p2p networks will not disappear.
Without borders, cross-border . Transnational remittances, foreign exchange will go through layers of regulatory bodies, and the transaction will be multi- documented. But if Bitcoin transactions , direct input numeric address , click, wait p2p network to confirm transactions , a lot of money over. Without any control mechanism , it will not leave any cross-border transactions.
Cottage were difficult to survive. Since Bitcoin algorithm is completely open source , anyone can download the source code, modify these parameters , recompiling , we can create a new p2p currency. But these cottage currency is very fragile and vulnerable to the attack was 51% . Any individual or organization , as long as the control one kind of currency p2p network 51% of computing power , you can freely manipulate the transaction currency , which would constitute a devastating blow p2p currency . Many cottage coins that died on this link . The Bitcoin network has been robust enough bitcoin network wants to control 51% of the computing power , the number of cpu / gpu need to be an astronomical figure.

?

Are you sure about that?

优点

完全去处中心化，没有发行机构，也就不可能操纵发行数量。其发行与流通，是通过开源的p2p算法实现。
匿名、免税、免监管。
健壮性。比特币完全依赖p2p网络，无发行中心，所以外部无法关闭它。比特币价格可能波动、崩盘，多国政府可能宣布它非法，但比特币和比特币庞大的p2p网络不会消失。
无国界、跨境。跨国汇款，会经过层层外汇管制机构，而且交易记录会被多方记录在案。但如果用比特币交易，直接输入数字地址，点一下鼠标，等待p2p网络确认交易后，大量资金就过去了。不经过任何管控机构，也不会留下任何跨境交易记录。
山寨者难于生存。由于比特币算法是完全开源的，谁都可以下载到源码，修改些参数，重新编译下，就能创造一种新的p2p货币。但这些山寨货币很脆弱，极易遭到51%攻击。任何个人或组织，只要控制一种p2p货币网络51%的运算能力，就可以随意操纵交易、币值，这会对p2p货币构成毁灭性打击。很多山寨币，就是死在了这一环节上。而比特币网络已经足够健壮，想要控制比特币网络51%的运算力，所需要的cpu/gpu数量将是一个天文数字。

Check the gauge of your power cord? Use a heavy duty.  This fixed the very same problem for me.

Put it in the coolest place and on floor if possible.
Just a few degrees may allow it to run for now.

Here is the delivery guy for S2s.

Sounds like it. Quick test and sort-of fix is to pull one board.

PSU it is!

i have a problem with all of my antminer s2.

it keeps turning off after 15-30min hashing, then it need to be unplug for 5 min before it can be turn on again. anyone having the same problem?
perhaps firmware issue or other known issue ??

btw, how to control the fan?

Look at my last posts pictures, it happens exactly the same to me. I think they should simply ship the boards out of the box in a different box than the miner box.
Bitmain has offered me new blades shipping the bad ones back and they have already sent me a new card holder. So at least I got a working miner but it seems that they have been playing football with it. Not good if you plan to sell the miner to a client.

I cannot understand why they dont fix it somehow.

We just had an S2 arrive destroyed.
All blades out of slots and in a bunch.
It won't boot.

All BITMAIN needs to do is put foam on both sides of the blade rails and on top of the main card in the middle since it's shorter.

They could also Pop Rivet two flats to those rails and the sides of the case. So what the case cover sticks up a tiny bit. It's worth the peace of mind.

S2 is way over priced BUT saves on electricity.
Still overpriced though...