Topic: ANTMINER S4 Discussion and Support Thread - page 77. (Read 301481 times)

Yeah, the guy I spoke with had a Spanish accent too. He didn't refer me to Yoshi, but was supposed to ask a supervisor how to proceed and then get back to me. Still hasn't gotten back to me yet.  I've spoken to Yoshi, but he seems to answer one out of every 4 emails and only once a week. Really discouraging stuff.

Im glad I didn't order batch 1...wouldn't have even dropped the hammer on batch 2 if not for the $400 off.
I have 5 units from batch 2 and luckily haven't had any problems I wasn't able to sort out myself...improperly seated cable on 1 unit...but all are running...as a test I ran them up to 212 and no issues there, but the strange thing is 2 of the 5 units are very picky as to which outlets they work on...until I moved them to different outlets (and replaced with another S4 running same clock) they would stop hashing around half an hour in and give xxxxxxxx with similar results to what you are showing. Having to reboot any machine every 2 days is defective in my opinion and I would be seeking replacements on any unit that cannot run without a reboot...period. Bitmain have come a long way in a year especially from the assembly standpoint....if you saw some of the pics of previously shipped miners I received you would wonder how they got any QC passed stickers on them...I sure do 
Im in TO...when I called the person I spoke with was very helpful but I cant remember his name for my life right now....he had a Spanish accent and referred me to Yoshi...hes the one who forgot about me for the last 2 weeks in bitmain fashion

Out of 5 S4s, 1 batch 1 and 4 batch 2, I've had a few problems.

My first, B1, had a faulty PSU and burned out on me. Bitmain was quick enough to get me the replacement PSU, but I'm still waiting on the promised compensation for the downtime. Others have been compensated, so what's going on bitmain?? Are you playing favorites? That unit also needs to be powered down and back up every 2 days or so, because a hash board dies out and the hash rate drops by a quarter.

With batch 2, I have the above mentioned problem of 2 dead hash boards in 1 unit, and 2 other units that need to be powered down and back up every 2 days because a hash board dies every 2 days or so, dropping the hashrate by a quarter on each.

I can deal with the other problems for now, but I will eventually try and get proper working hardware. Shouldn't be too hard to get a few replacement hash boards shipped out that I can replace myself, right bitmain?? What really needs to be taken care of right now, is my half broken S4. I should also be compensated for half of what the machine should have mined since I received it.

What's wrong with your unit, macgyver? I'm also in Canada. I did call their USA number, and talked to someone who wouldn't give me his name. Told me to call him "Z".   He was supposed to call me back or email me last week, but not a peep from him either. I'm starting to think I'm going to have to book a flight to China if I want some service. KNC is easier to communicate and deal with for fucks sake.

I haven't had a hardware failure with S4 yet to be able to say which boards are numbered in order in relation to the layout in the machine but find it odd that its alternating boards that are not working...when I opened mine up I noticed that its really 2 boards stacked together so I was under the assumption that 1+2 are the same board and 3+4 are the same board....very odd I wish I could have a look at it...I like fixing stuff...guessing you swapped PSU as well?
 
As for your sentiments about service when needed, I couldn't agree more ...any company is quick to take your $$$ but how fast do they fix broken things? I must say that the failure rate is very low with bitmain but still there are failures, and machines collecting dust..I have a machine down for a couple months on an unrelated note and waiting since November 18th for a response, and the main reason I haven't ordered more from bitmain is the lack of timely support...and still waiting...makes my next hardware orders that much easier

Where are you located? Have you tried calling the bitmain warranty #? I used the number in the US as I am in Canada

Thanks, but yeah, I've tried everything possible. Even switched data cables from another known working S4. There's absolutely nothing to do with this unit, 2 out of 4 hash boards are broken. I wish bitmain would be able to communicate better, it's their only issue. I wanted to order another 5 S4s, but if I can't get service from them when they send me broken hardware I'm afraid I'll have to take my business to spoondoolies.

Make this right for me, bitmain. I want to remain a customer.

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

Can someone from bitmain please provide me with support?? I've contacted everyone I can, and I'm still not getting any help. I have an S4 that needs to be RMAed, I've had it for 2 weeks now and have been just about ignored for as long.

Im so sorry you are confusing the CHIP specs with the chip voltage specs when used in the S4....glad I could help clear that up....google is your friend keep on reading!

WARNING>>>>>>>>>>> DO NOT TRY THIS
If you think those chips can run at .75v on the S4 give it a go and see what happens...set it 0750v in advanced miner settings and watch either your PSU fry or your machine cease to work...
WARNING>>>>>>>>>>> DO NOT TRY THIS

Chip specs... https://bitmaintech.com/support.htm?pid=007201406210452505098o0UWHKV0661

And the temp of my 3 running S4
http://prntscr.com/5c40ij

Im curious what your S4 (s) are running at and what you think of them.......how much wattage are you pulling at the wall at what clock speed...hows your board 3 temp and have you checked this issue with multimeter? If I were to make a guess...its that you don't have any S4 and just going by what you read...but I don't really like to guess..I could end up looking like a fool  

I don't know where you read about chip specs but if you look in the miner config the voltage setting is clearly 0725 which is .725v so where you get recommended voltage is one thing...also running the chips at .75v does not give you the w/gh ratio that bitmain advertises for another thing... but most important of all is that no matter what you set the voltage to, it stays at .75v on 1 of the boards while the others as in the quoted post demonstrates a setting of .685v which is being ignored.... I think you might want to look into this issue a bit more and perhaps think its more than just ONE faulty machine...also some machines are using 200w more than advertised...you can see the examples posted throughout the thread if you read it...I know there is a lot of crap and fanboy garbage in here along with paid support one liners...so its hard to find real information, but it is here  

Doubt so. Most likely clearing stocks before they announce their new hardware.

As for the chips, if you read the chip specs, the recommended voltage is 0.75v and max is at 1.1v

Bitmain is underclocking & undervolting the S4. If I were to make a guess, in order to hit 2TH, one board has to be running at min 075. Think about it.

Edit: Or his bad luck that he got one that is not properly done up. I would have requested a RMA if I think I got a faulty machine....

Im wondering if this fire sale on S4 has anything to do with the overvolting of board 3 which causes 5c higher temps on all units and as another forum member discovered is using .075v which is well over the .0725 voltage spec for the machine...and still no answer from bitmain on this matter.. but the voltage consumption spec has changed from the original .69   ironic how the seemingly important things get swept under the carpet with free shipping....
*earplugs not included*

That's a lot of difference. LOL. But come to think of it, does make sense...

Dogie.. make them spell it out in full 

I believe the same.

Believe what they wanted to say was 16 AWG wire, not 16 amp?

Nor in the US.

However, on a 240 Volt circuit, 1400 watts is 5.8 amps.  On a 120 Volt circuit, it is 11.6 amps.  

The 15 amp cords are sufficient for 120 Volt circuit and the 10 amp cords are sufficient for the 240 Volt circuits.

It is... in some countries at least. For eg. You won't be able to find 16A power cables here in Singapore. 

I don't think what is listed is a problem.

Sure... no problem... you will also need hinges for the vented front door and vented rear door.  A small hole would need to be cut to allow power cords.

Thank you both.