Topic: ANTMINER S4 Discussion and Support Thread - page 28. (Read 301481 times)

Right now I have 4 S4 and just 1 of them has a bad PSU, but I am sure that in the future I'll have another PSU go out, so you are right, I'd rather get the 2880w parts.

I talked to someone a week or so ago when I first had issues, need to find that PM and order parts... just not had time to mess with it

If you only have 1 S4, probably the DP2000. If you have 2 S4s, you can run both of them off of 1 2880w.

Either way, I'd probably go with the 2880w.

Yes, my power goes out when it storms practically every time.  It has stormed a lot here lately.

Which of those two PSUs you mentioned are the cheaper solution if you combine PSU + Board + cables?

No, they won't fit inside the S4. I don't know of any PSU that would be the same form factor as the original. You'd need to run them externally and route the wires in where the old PSU was, you need wires that are 36" long. For the DPS2000, look up sidehack's breakout board + wires. For the 2880w, look up Finksy & J4bberwock's breakout board + cables.

I was looking into the two psu's you recommended. (IBM DPS2000 [2000w] and IBM H-2880 [2880w]) niether of them see would be a perfect fit and the connections dont seem similar can you provide a link and if it needs new wires can you provide a link for that too.

I still need to work on getting my S4s dead PSU replaced... just not had time to deal with it

My apologies, sarcasm doesn't always show in my posts the way I intend it.  I also think bitmain's choice to remove voltage control was stupid, and the problem is with their choice of SHIT psu's, not people's  choice to under or over volt. I was making a joke about the fact that they won't give us any reasonable explanation as to why they removed it, when it is obviously due to their PSU's failing for other reasons.

As for them being bankrupt, I have no idea, and can't comment.  Anything is possible right now, weird things in the industry lately.

Yes, that's normal. The S4's power switch isn't a regular toggle switch like ATX PSUs. You'd need to rig something to keep the button depressed all the time. I know of a way, but I won't post it because it might not be safe considering the sometimes spectacular fashion these PSUs die. I don't want to be responsible for a fire.

How much of an issue is it really anyways? Does your power go out every week or something?

Hi everyone,

This may already be in this forum somewhere.  I was hoping someone might can save me some time to let me know if they have similar issues:

Anytime my power goes out [due to a storm] and comes back on, all of my S3's and SP20's come back on and continue mining.  However, my five (5) S4's do not come back on.  I have to physically turn them back on myself with the power button.  Does anyone else have this same issue?  Is there a way I can make them come back on when the power comes back on?

Thank you,

David

The best mod you can do on the S4 is replacing the PSU which is a ticking time bomb, 4 out of 7 of mine failed, and the only reason I still have 3 working PSUs is because I pulled them and replaced them with proper server grade PSUS before they died. (IBM DPS2000 [2000w] and IBM H-2880 [2880w])

The fan mod isn't dangerous IMO, and bitmain adding the feature officially (via --bitmain-homemode toggle) seems to support that. If you don't care about noise, then no need to run that way except perhaps to prolong fan life. Yes, the fans fail often also. I brought 2x S4s into my house to run in the basement to provide heat during the past winter, and slowing the fans down made that possible in my case. Don't think my woman would have tolerated the noise else-wise. You aren;t actually slowing the fans down, rather pushing back the temperature at which they ramp up. Seems to cause a ~5c increase in temps, which is fine and a good tradeoff IMO.

Lol if that is true that they arw going bankrupt its becuase they got too greedy and started their own farms instead just selling asics becuase you cant go wronf with turning over a profit for a pruduct unless people want there money back. Why would you say wr are in trouble. You dont think tht will reflect in bitcoin prices cuz i doubt that less miners means we are more important.

This is not true, and they can do well. They can put a limit on voltage control to 0725, and users cant exceed this limit, with only a few cgi commands on s4s web page.  THAT'S EASY, BUT THEY DONT DO! i heard a rumor bankrupt for bitmain company   , i dont know is this real or not but they have a financial situations and they are only 4 people left in their company   another rumor is, bitmain chips BM1380-1382-1384 are not their chips, this chips are making in different company then bitmain labeled them.
eg. https://ehash.com/ , http://avalon-asic.com/ why avalon didnt bankrupt or down?
asicminer (http://www.cybtc.org/article-75-1.html) , cointerra,butterflylabs..down & spondoolies is sale, this is very very interesting...
So, we are in trouble dude.

Hey do you know of any good mods that out for this. I know that nicehash has cgminer 4.9 available. I heard of a fan mod but seems dangerous and do know why people would want to lower fan speed would be nice to increase it to keep it cooler. A quiter fan would be nice but not at the cost of heat ruining the unit.

Forget about undervolting, bitmain has disabled voltage control starting with firmware released on Jan 29th. If you want to undervolt and underclock, you'll have to use firmware from Oct. 16th.

The S4 should run on either 120v or 240v. You shouldn't be blowing fuses.

Ok just got an s4. I turned it on an it blows the fuse. the surge protector is rated 1850 watts. I noticed when the s4 is running the fan 1 and 2 run at 1500rpm while fan 3 and 4 run at 3600 rpm. as long as im not mining it doesn't blow a fuse but as soon as it gets up to full seed it blows a fuse. I'm going to try to plug it in the socket where the washing machine is hooked up to but it should be able to run on this outlet so i doubt that is the case any imput would be appreciated. I'm also going to upgrade firmware then underclock. crossing my fingers. Could the fans be malfunctioning? this is a preowned s4 anyone have the watts with corresponding voltage.

Fixed the problem faulty surge protector. You can still change the MHz frequency it runs at. I haven't messed with the voltage i read the psu's are weak on these units. At first i thought i got gypped was going to leave a nasty feedback on ebay turns out it was on my end. I was able to run at 168.75 M but as soon as i got rid of the surge protector and connected directly to where my washing machine was connected it fired up with no x's no blown fusses.

Um that's bull I hate that companies lock things down. They should just have a system to void warranty if you do change those settings. In the miner advanced config. menu  it says you can change voltage though but im not sure because i haven't used it.  it's false advertising too on bitmain because they do show a chart of under-clocked settings when you buy the unit and dont mention you cant under-clock it so i would be careful you do get a class action lawsuit heading your way. That would bring a hit to profits. lol Now a days it's best not to mess with your consumers too much.

Hello, support!
I need help.
Can you tell me marking of IC(SOT23-5) U48 or U50 on hashboard?

Thanks.

2cents /kwh sounds too good to be true.  We pay 10cents here in the midwest, god knows what it will jump to in the summer and I refuse to turn on cenntral air to cool the basement this year.

I would be making a killing at those electricity rates but im basically stuck here since I cant move.

But at least your S4 is safe from DD4BC?  After BMT's encounter with the ransom this year, I would assume that was put in for their own farm's protection, not ours.  Removing voltage control, well that was removed for our own protection   They haven't learned yet that people cannot be saved from their own stupidity I suppose...

Voltage control is still locked down. Thanks, Bitmain.