Topic: ANTMINER S5: 1155GH(+OverClock Potential), In Stock $0.319/GH & 0.51W/GH - page 18. (Read 450938 times)

My S5 has been going smoothly for the past few months.
It stopped hashing on Sunday. This morning I rebooted it and did a complete power down.
No hashing at all. Hardware Version reads x.x.x.x
I have checked the power connectors and did a firmware upgrade.Still no go.

Any suggestions on getting this puppy hashing again?
The average temp for the past month has been 40-42 degress.

It just looks like a replacement for the 14V Buck Converter that feeds the LDO on the Top 3 Stages. I guess it's intended as a replacement if you have a failure? They have removed the inductor but left the U101 in place, also looks like you can also adjust the voltage.

Rich

Does it say what it's achieving?  I'm guessing better efficiency it looks interesting.

Just would like to know a lot more about it.   The S5 would be amazing if they could get to level's sidehack has, but I wont hold my breath on it.

Today i had a S5 throw thousands of errors in a short time, for the course of 30 minutes, almost all shares were Hardware errors. Does anything have any clues as to what could of happen aid if i should just overlook it?

If you have a way to measure the power going to the miner, under load at the PCIe connector is preferred, you may find the issue there.
You may also try connecting only one hash board.
The Bitmain zendesk has some videos which will walk you through many different things.

https://bitmain.zendesk.com/hc/en-us

I would enjoy hearing feedback regarding your experience. Please let us know and I am happy to work with you on this so we share the cause.

Every two seconds is much faster than a bit of mine, but I see similar activity. I get concerned because so many people have burned hash boards when the temps hit 80. It seemed BCT was on a rush there for a while we had someone new posting almost every day. Their internet connection would drop out for whatever reason, many said the fans stop and the hash boards keep running. Many people who aren't concerned about fan noise or other minor side effects cut the blue wire so the fans always run. No feedback and they run at full speed. I am assuming it is feedback, I have not looked recently, but it is the blue wire on the stock S5 fan if you need to look at such.

I haven't determined the internet is my issue, but somewhere around 8, 12, 24 hour ranges I lose anywhere from 3TH to 7 or 8 TH. I am using the pool's worker stats page where the shift graph is located to see how much it drops and over what period.
I installed wireshark to record and monitor internet packets through a problem time frame. I am familiarizing myself with normal traffic and I plan to record traffic to catch a problem time and see what if anything I can find.
My meter will record, but I have to be here to see anything, and activate it for that matter. I have randomly been checking my power and it looks great (except for one other issue I have with the power, but when my other issue occurs I lose a leg of my 240 split phase, so separate issues.) I measure 124 to each leg and 248 between both. Subpanel is not bonded, but the main is. I am only using about 70 amps of a 200 amp panel. I drove a couple of ground rods and have them in series measuring about 6 ohms. I tried shaking and pulling on everything to see if I can make something fail / short.

I tried moving pools for a while, and saw it on the other pool. At that pool the effect was much more noticeable. The way the payout system works it is obvious when you stop getting paid. I was lucky enough to have these dips in my hash to (two pools now)   are costing me coin.

I won't bore you with any or all of the things I have been through and checked, but I should have started checking packets sooner or get something running to record.

This seems to happen and I am not aware of it. I have these inconsistent dips in hash for small amounts of time, but obviously just small enough for the pools to still log it.

The only thing I have seen is while killing my keyboard as usual a week or so ago an S4 decided to rev the fans and "sound like" it had joined a new pool, or something along that time frame. The display still read as though it was hashing. I refreshed my miner monitor and it kind of hung for maybe 3 seconds and then refreshed and it was winding back up pool side.
More like a "blip in the power" than the internet. I could see my cable modem as well, and all green lights, definitely not rebooting.

 I do not think this is an S5 issue as much as I think it is power, internet, or both. Your description had me thinking about this particular oddity I am experiencing which happens to involve both Bitmain and SPtech miners of different models. I don't think it is "the miners" themselves, although it could be one of the miners pulling the load down.

If anyone has any thoughts feel free to throw them my way.
I am going to bury my head in packets for a while. I'm not excited about that part but it is all part of it, right?

Hmm. Possible. I'm on a local p2pool and it appears to still be up but it could be something, likely the bitcoind. Seems like it's nothing to worry about though.

I was just fiddling around with the S5's Minerlink thing and noticed that when I click the save & apply button, the miner ~~Thinks~~ for a moment, then it reverts back to the OFF setting.

I tried searching for this problem, I saw some have had the same issue, but I didn't find a solution to try.

.........pssssst ....  whats the super douper double top secret procedure to use miner link???

It will beep if you loose internet connection or the Pool goes down for some reason. This could be the reason?

Rich

Anyone know what this means?

Antminer (S5) starts beeping about every two seconds. If I check the status page, temperatures are OK (59 and 63), chains are all 'o' but hashrate has dropped to near zero. After about 60 seconds, there is a long beep then it looks like things recover.

Previously, I have just restarted when beeping has occurred but now I'm wondering if that was pointless and preferably, I'd like to stop it happening in the first place.

sorry i posting it again

Yes that is correct if you use that centre tapped transformer. However the OP was proposing to just rectify & smooth the mains voltage.

Voltage maths is correct with or without the transformer.

http://www.trans-tronic.co.uk/rectifier/?circuit=Full+wave+bridge+-+capacitor&dc=1&voltage=120¤t=&calculate=


Rich

Multiply by 0.71  or divide by 1.41

http://www.trans-tronic.co.uk/rectifier/?circuit=Full+wave+-+capacitor&dc=1&voltage=240¤t=&calculate=

Center tap to keep the amperage

Still a lot of chips...

Yeah, it was more some idle contemplation but my thought was along the lines of not having to buy a pricey PSU for 10-20% of the miner cost. You could probably have a much higher current running through that too so more cost savings for multiple miners. A full ATX CPU seems like overkill just for a 12V supply.

I would regard this as purely hypothetical. It could be made to work but you wouldn't want to do it. I suspect the varying mains voltage would be the least of the problems. In practice for safety reasons you would have to use a transformer, if you were doing that you might as well step the voltage down, and once you have done that you have created an old school low efficiency linear PSU. 

Rich

It is multiplied 1.4. But is that voltage from wall stabile enough to do that? I doubt it will vary too much.

Yeah I think it is 1.4 x volts.

Not divide.

I wonder if an old school transformer to rectifier to caps can be stable.

Hmm not sure what rectifier you are using but with a full wave bridge I multiply by 1.4

Rich

Rectified & smothed 120v AC is  93v DC  sorry typo  83V

When I first thought of it, I had in mind that the chips were 3-4V but that would certainly be a lot of chips.

Safety though? Pshaw. Just think of the hashes per Joule