Topic: ANTMINER S4 Discussion and Support Thread - page 36. (Read 301481 times)

Hi Prelude,

What is your PSU?  I have a few PSU's here but they have PCI-e connectors.  Do you know how I can convert the wires to connect to the screws in that series of S4?  Is it as simple as cutting the wire and screw it directly on the board?

Thanks!

there are 2 types of s4 hash board, which one is yours? put your board pic in here and i will show you temp.sensor is where. or you can find well with fine look LM75A 8pin SMD ic.

Will the S4 take 240V in?

Does anyone know where the temperature sensor is on an S4 hash board?

Something must went wrong.  Can you try to reflash the firmware?

Can you SSH into it?

At 55CFM I don't think that fan moves anywhere near enough air to call it a replacement for the existing S4 fans.  Think you need something in the vicinity of 300 CFM.  And at $30USD I'd think you could do better by going with a Delta.  JMHO.

I have a problem with my S4, It stopped hashing, temp shows 0, but the miner is up and running. I reset, upgraded software again, but there seem to be some problem. Any help?


- Another problem with my miners is, when i change pool settings, 1 of my miners shuts down completely. Is this a common issue with new firmware? It wasnt the case before   

if we compare it to s5, it doesn't seems good at all

we have 2.6 tera vs 1155 gh/s, and 1500w vs 590

so 2.25 ratio vs 2.5 ratio, there is a loss of 0.25 ratio in hashing, which is about 288 gh/s lost...

I think I have found a good fan for dust;
https://www.megekko.nl/product/443/376142/

https://www.youtube.com/watch?v=gfhbUZ1CSOM

what do you think?

Same junk PSU and fans?  And trashy firmware that doesn't work properly with p2pool or shorter alt coins, and keeps the fans running way too fast?

I'll pass thank you.

M

Sure.

- Hashing speed: 2.6 Th;
- Power consumption: 1500 Wt;
- The same S4 case;
- The same chips like in S4: 1382.

https://bitcointalksearch.org/topic/m.10922744

Any more details on this rumor?

There is a rumor that S4+ will soon be available.

Dear BITMAIN, we want (and need) new chips. New miners. Not polished old hardware like S3++, S4+...

p.s. and please don't forget about S2 uprade kits. 

With all the pictures of dust I went ahead and cleaned my S4's.  They were pretty clean with running most of winter without a proper cleaning, just getting rid of dust on fans.

Only one that seemed to have a little dust was the one that I had on a metal shelf up higher.  Seems being above got a little extra dust.  But did not look bad.  Took a rag and some canned air and now look very clean

Speaking of dust, I bought 2 used S4s this week from someone local in Montreal who was running 16 S4s in a "data center". I've never seen more disgusting hardware in my life! Dirt was literally baked on everything, the picture doesn't really do it justice especially since the top of the hash boards were the cleanest part. Take a look:

Pre-cleaning (middle and bottom were much worse):



After cleaning and installing a proper replacement PSU:



And now she's purring:



I wish I would have weighed the S4 before and after cleaning. No kidding, there must have been a pound of dirt and filth in there. I'd love to see where this person is running their machines.

This unit actually had a huge defect, BITMAIN used a wrong nut and one of the 12v connections on a lower hash board was completely loose. It barely even touched the bolt's threads, slipping right off when trying to tighten it. I've never seen this nut before in an S4, so some asshole at BITMAIN's assembly line was too fucking lazy to get off his ass and fetch a proper nut right before he finished his shift on a Friday night.   The wire's terminal was completely charred along with the nut and washer, the rubber insulation almost completely melted away, and the hash board looks damaged but works fine as far as I can tell. I don't know why I didn't take pics, but I still have the charred connector on the PSU if anyone wants a look. I'm putting the blame on BITMAIN since, judging by the sorry state the S4 was in when I got it, the previous owner had never bothered to open it up.

Amusingly, somehow both units PSUs still worked even though they were stuffed with dirt/dust. Pretty funny considering I run my other S4s in a clean environment with very little dust, and I've had 4 out of 5 PSUs die on me.  

Edit: Just noticed that you can see the charred washer in the second picture, beside the screw driver's handle.

Same here, not a problem with dust, it's the noise!!  My wife is always bitching about it!!

If it looks like that on top i would love to see inside.   I have never seen anyone with that amount of dust in 3 weeks.  That is harsh conditions.  None of my S4's look anything like that.  I do spray them out every once in a while, but dust has never been a issue for me.

No Shit!!!

That is a lot of dust...