Nice reference. I suspect the amperage ratings are higher than the typical ones I use because the cords are so short. Distance does matter. Cheers, Cassey |
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I don't work for bitmain but have you tried opening the case and checking all the ribbon cables and power cables to make sure they are connected properly? It looks like 1 board is not getting power and 1 is barely getting any....either the PSU was not clipped in properly or some wiring from what I can see in the pic . Re-seat all the ribbon cables and power connectors and if its still giving that result, try a different power outlet in another room if possible. Im willing to help...2 weeks with a machine down really sucks...I know how bitmain support is as Im still waiting for response on an issue myself
I had a much more severe case of that when I moved my machine across my basement. Don't know if opening the case and pushing on cables fixed it (I didn't find any loose), or just the downtime and power restart associated with doing so, but the probably went away when I put the case base together. Cassey |
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Believe what they wanted to say was 16 AWG wire, not 16 amp?
I believe the same. Don't think so: 10 AWG is generally thought of as 30 amp, 12 AWG as 20 amp, 14 AWG as 15amp, and 16 AWG as 10amp. Cassey |
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Believe what they wanted to say was 16 AWG wire, not 16 amp?
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HELP
Just received my Antminer S4 and having a difficult time setting it up. When turning the machine on it whirls at full speed/noise, but never settles down. The LCD screen is bright but never displays any text. Anyone know what the issue is?
This occurs whether directly plugged into my computer, or plugged into a Netgear N300 wifi to Ethernet adapter. I unscrewed the lid, and all of the cables appear to be plugged in properly.
Popped the SD Card out, and then pushed it back in. Miner worked! Stable after adding CK's cgminer mod. Running 1.82GH at (hopefully) 1060W as suggested on BtcGuild. Thanks for the help on this thread! Congrats. The shipping gods have not been kind to S4s, although all three of mine worked out of the box. One had a bit of scratched paint. Mind posting the Freq. and Voltage your using and/or a link to the article you read? Cassey |
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Does anyone know what the CFM rating is on the S4 fans? I have (3) of these units rigged into a temporary "hot aisle" in my equipment room, and I need better heat rejection. If I knew the CFM rating, I could multiple by 6 each and get a decent estimate for ventilation requirements. As is, I'm getting a bit of air mixing which is resulting in slightly raised temperatures (top unit is running at 54C per the LCD - not bad from what I hear, but I'd like to improve on it.). Also clueless why one board is reporting to be so much cooler. I'm guessing a faulty temp sensor.  |
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Well, full speed is initialization mode. You obviously pushed the start button on the back. Suggest unplugging it, counting to 15, plugging it back in, and hitting the start button. Once it kicks in (seconds), go around front an watch the LCD - it can take a minute or two (or so it seems) to finish initializing.
Of course, you need an active network with a DHCP server plugged into it on that subnet for it to establish an initial connection on. Any Wifi router will provide that out one of its hardwire ports.
Report back what you see and remember to be patient.
Cassey
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2K (2048) seems to be the recommended difficulty for a 2TH/s miner.
Just to demystify "diff" for those that may not know: you can think of it as simply how often the hardware goes back to the pool asking for work. For a beast like the S4, going back say 1000 times a second will mean its starved for work (a low diff) and why it doesn't report doing much processing. Apparently 2048 (and diff is always a power of 2) suffices to allow the S4 to actually work most of the time. A higher diff, like 16284 (just 3 doublings from 2048) simply mean the pool is handing work over 1/8th as often (and 8 times as much work) as it did at 2048. Most dynamic diff pools play with the assigned worker diff so that it "checks in" about once every 15 seconds. The only downside to a high diff is the potential for wasted work. A GOOD pool will notify all workers when a block is found and immediately assign new work, a bad pool won't. Even with the best of intentions, your hardware may submit shares after the pool knows a block was found (say 0.1 second after that happened), in which case you get the "stale shares" message. Cassey |
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Something wierd going on with my s4. Im mining on nicehash, and every few hours I log into the console, it says speed: 0ghz, then I go to the led display and its got some random slow speed like 650ghs. I shut it down and reboot and it instantly returns to 2Ths...for an hour or two, then I have to keep shutting it down, not even a software reboot through console will fix it...any ideas? I also have the latest firmware: Thu Oct 16. Cgminer 4.6.1 .
Thanks in advance
Vegas
Its not your miners, its NiceHash - they are switching coins on you. That causes your Diff to go very low (at least for an S4), the S4 resyncs than cranks up again. The 650 is the average while your diff crawls up. At least I've been seeing something very similar when I use the normal ports over on multicoinpool.org... Try switching to antpool, just as a test, and see if things stabilize. Cassey So I mined on Antpool last night and stayed at 2ths all night. So, this miner does not do well with multipools. Funny thing is I own an S1 and it does fine with multipools. Is there any known fix for the S4 and multipools. The reason I ask is because I have mined 19 hours with 2 Ths on antpool and it says btc earned 0.015. So by my math I will be earning .02 BTC +/- a day for 2THs?? That about right? Somethings not right because on the MMXIV multipool I was earning 1.2 coins a day and they are worth .03 BTC and thats with me reseting my miner 10 times a day. I know the payouts flutcuate because its all based on luck but this is a VERY wide spread. Does ANYONE have any ideas how to stabalize the S4 on multipools? Vegas Find a multipool that allows you to set a min diff of at least 2048 will help. multicoinpool.org is working on that but it isn't up yet. |
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Okay I may grab one or two of these. I am interested in under clocked results.
so is anyone running freq 187.5 with 0.685 volts? if so what do you get for hash rate watts/ power numbers and fan speeds?
better yet has anyone done freq 175 with 0.670 volts? if so what do you get for hashrate watts used and fan speed?
TIA
philipma1957
Ask and yea shall receive (at least sometimes!): http://puu.sh/d3BqI/ad9aaf7d23.png - 187.5 at 0.685V. |
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Well... Im mining on Diamond Multipool that uses nicehash. Is there anything I can do to force the difficulty? I remember there use to be a setting I could add after my wallet id to force a higher diff on my S2 , but cant remember what it was...it was +.01 something.
Vegas
Sorry, no clue. Just switch to a mono-pool, like antpool or eligus to see if the problem goes away. |
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Something wierd going on with my s4. Im mining on nicehash, and every few hours I log into the console, it says speed: 0ghz, then I go to the led display and its got some random slow speed like 650ghs. I shut it down and reboot and it instantly returns to 2Ths...for an hour or two, then I have to keep shutting it down, not even a software reboot through console will fix it...any ideas? I also have the latest firmware: Thu Oct 16. Cgminer 4.6.1 .
Thanks in advance
Vegas
Its not your miners, its NiceHash - they are switching coins on you. That causes your Diff to go very low (at least for an S4), the S4 resyncs than cranks up again. The 650 is the average while your diff crawls up. At least I've been seeing something very similar when I use the normal ports over on multicoinpool.org... Try switching to antpool, just as a test, and see if things stabilize. Cassey |
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I already have one S4. I'm WANTING to purchase 4 more S4's on the 29th of this month. However, hearing this kind of crap concerning "quality and control" is beginning to make me have 2nd thoughts!
From what I'm reading, these are "minor" quality control issues. KNC's have a reputation for catching on fire overnight, Zeus's units this spring came in at 3X the power consumption they advertised (GAW's rebranded ones were only 50% high since they were not as aggressive advertising them). Compared to those things, having to do a power cycle after changing parameters is pretty minor. Cassey |
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LOL! Antpool sucks. Bitmain.. look look. I can't even get antpool to register my hashrate...
Try a different pool.. slush maybe, or set your voltage to 0700 200mhz
Only an hour on it, but back to multicoinpool after a hard reset and its stable so far. Picky things... |
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I really think it's the multipool. It's probably a firmware issue. As I've said before, once it switches pool a couple of times, X's starts appearing. Why don't you try a non-switching pool and see if the problem comes back? If not, then you have your answer.  Easy to do! Will let you know. OK - switched to antpool. Will let it run overnight and see if anything appears. Odd bug though if that is it. Nope - although different chips failed. |
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I really think it's the multipool. It's probably a firmware issue. As I've said before, once it switches pool a couple of times, X's starts appearing. Why don't you try a non-switching pool and see if the problem comes back? If not, then you have your answer. Easy to do! Will let you know. OK - switched to antpool. Will let it run overnight and see if anything appears. Odd bug though if that is it. |
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My S4 ran perfectly for a few days but is now getting x's and significantly reduced throughput. e.g. 3 x's is costing me about 10% hashrate. This is happening at stock speed, at both .720 and .725 volts, with the same chips dying. Takes a few hours by the way for the chips to go offline. http://puu.sh/d0D9J/338e2c960e.pngAny suggestions? I'd like to see 2TH again. Cassey |
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I don't mind but others might. If you feel you should create a New Topic, please post the link to that topic here for me please.
Thank you.
Well, to avoid causing any stress, I posted it here: http://asic.usertalk.info/index.php?topic=159.0 (that is a lightly used forum I maintain) Cassey |
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Static or dynamic (DHCP) shouldn't matter - networking routing, firewalls, etc. will.
If you can connect to the IP address displayed on the unit while on the same subnet, BitMain has delivered. If the unit is not displaying an IP Address, then you either don't have dhcp running on that subnet, or the unit does not have a valid network connection (bad cable perhaps?), or the unit is broke - in decreasing order of probability.
Cassey
Thank you for your contribution to this discussion, Cassey. Like I said, I'm not a specialist. I used YouTube videos to help me learn what I wanted to do with mine. David Sorry if I came across too strong there. Networking can be complex - like learning to swim. Tough to learn the basics, then it comes naturally. If the groups wants, I can post the basics - should only be a mildly long post... |
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Static or dynamic (DHCP) shouldn't matter - networking routing, firewalls, etc. will.
If you can connect to the IP address displayed on the unit while on the same subnet, BitMain has delivered. If the unit is not displaying an IP Address, then you either don't have dhcp running on that subnet, or the unit does not have a valid network connection (bad cable perhaps?), or the unit is broke - in decreasing order of probability.
Cassey
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