Topic: ANTMINER C1 Discussion and Support Thread - page 38. (Read 129130 times)

Got a Jalapeno still hashing away there?  It looks stock, is it modded at all? 

Got a

Ended up adding another fan.  Now have 6 fans on each radiator.  They were cheap fans I had laying in my parts pile.   If you have a high RPM fan to add it really could make a difference on amount of air though.

Anyone, preferably in Asia region, have a C1 (batch 2 preferred) that they want to sell for a reasonable price? If you have something to offer please PM me. Thanks.

Neither of those would cause what you have, its just something that occurs.


Primochill is fine, everything will be similar.


For me when looking at the fan, its second from the right but it might be different for you.


Not sure as the board labels don't seem to be in a sensible order.


Chips need the voltage change to start back up, which the software reset doesn't do.

I have a odd number with only adding two.  I thought about adding a third on backside but with winter air it really does not make a lot of difference . Maybe during summer I will add the last one.

I seen that 6 fan mod as well, digging through my scrap parts now for more fans and my wife criticizes me for my piles of old computers hahaha

Wow just seen that link above that user "bitmain warranty" sent hehe I am so ordering one of those

Is that DHgate actually bitmain?

I Know thisis a bit off topic but since were discussing cooling mods anyone ever oil cool a antminer?
Can you oil cool a PSU?

I know the have been successfully oil cooling motherboards for years now. Just a curiosity

Still digging this cooling system haha http://youtu.be/K_gCnvsM-QY

I did the hard reset thing, and no X's today yet I will be checking frequently. I have not modified any settings as far as clock or voltage goes. Its @ 250mhz voltage 0760  I dont overclock until the warranty expires bitmain warranty emailed me this morning guess they found that post. They said unless I got it from bitmaintech or bitmain store on ebay the warranty would have to be handled by the amazon seller I got it from ths guy www.amazon.com/shops/cryptocrane so i messaged him last night requesting a RMA have not heard back from him yet. Its the weekend. Hopefully will not see any more x's

One thing i did before hard reboot was fill in the top pool I had emptied the top 2 pools addresses and jumped to my third pool. When i switch pools i just remove the pool address and leave the username and pass for convienance. Not sure if that would cause a issue, i wouldnt think so but just in case, I filled in the top pool info.

So far so good like i said i will be keeping a very critical eye on it. But if I find any more X's And if the guy lets me return it I will be buying a S5 instead. He sells them for the same price

If those X's do come back what would be my next step short of a RMA? Thermal paste issue? I check underneath the miner and there is no puddles . Not a fan of opening the case up, yes I am that lazy haha.

What do you think thermal paste issue or potential leak?

Like i said so far 15hrs and no X's so hope it stays that way, hash rate has stabalized as well still wanders awider range than my S3+'s though. But it is averaging out correctly @ 1006.5 GHs avg. still technically not the 1008 Bitmain states is guranteed not sure what they mean by that? if its not 1008 they what take it back? Pretty sure guranteed probably means something different in china than it does here in the US.

At any rate since I got your attention what is the best fluid for the miner, I got primochill in it now as thats what amazon had for a good price. But is there any specific fluid better than the others for some special cooling property? Or are they all pretty much the same deionized low conductive fluid with anti-microbial and corrosion resistance? Care less about Dyes i dont have any black lights and not going to buy one just to light up some tubing I do got a flow meter coming with built in temp sensor and LED light, just so i can visuallly check things are pumping without having to focus in on the pump looking for movement.

Also if i do need to open it up
which board is board #2 if viewing from the front? second from left or second from right?
and any diagrams of the asic chips which ones are represented by those with the x's? ooooooox xooooooo

Like i said so far so good no x's yet just checked again
And what would be the science behind why a psu power down reset would make them disappear versus a reboot form the software panel? I tried that 3 times before doing the PSU reset and when i rebooted from the panel after 235-30 mins the X's kept coming back.

Does that indicate it was a software bug or something versus a hardware failure?

I added 2 fans for the fun of it on opposite side of radiator.  It seems to make it a little cooler.   The fan's i used are cheap (free after rebate) i had laying around.   I'm sure you could do a lot better on fan quality and see even cooler results.

Mine have expired. I have been looking for a few coupons also. Would not mind getting a C1 if I could get the price down more to compensate for the low btc value.

Been wanting to order another C1 for over a week but with the drop in BitCoin value, all the deposits from the pool seem to not help with getting enough for one.  Wondering if there are still any coupons for C1's out or are they all expired?

Give it a hard reset (via PSU) before you send it back, and then let us know what voltage setting your on currently.

@rpandassociates,

PM sent!

Warranty Needs, you can always send the products to the following address.

Bitmain Warranty
3700 Quebec Street
Unit 100-239
Denver, Colorado 80207

Tel: +1-844-248-6246 Option 2


*2-way shipping fee or replacement cost may apply to the unit purchased from other than Bitmaintech.com or Amazon Seller "Bitmain" or Credit Card Purcahse via

http://www.dhgate.com/wholesale/products/ff8080814999aafa0149c0d2594761cf.html

Due to pump failure I have 2x C1 with one radiator and room temp is 40-45C, C1 temps are 58-63C. Working well.

Okay had my antminer c1 7 days and have not overclocked or anything and today I am gettings x's
Chain   ASICS   Frequency    Temp               X.s errr!!!!!!
2         16           250           44            ooooooox xooooooo

Man I am glad I did not over clock

So what should i do?

I am running on a brand new evga 1300w G2 all 8 pcie hooked up
Only miner on that 20amp circuit so shouldnt be a power issue

Got a link for the RMA or should i send it back through amazon (cryptocrane)
This Sucks !!!!!


I have 9 s3+'s all overclocked and have never had a x they have been hashing at 505GHS steady for 4 mos. and have never seen a x.

I have 3 C1's sitting right next to one another, in the same room and all three have different temps. Ranging from 29-43. It all depends on the miner rig. I have 6 of them and I'm aware of which 2 run hotter than the others. Why they run hotter? Most likely a quality control issue with the thermal or some other thing. None are exactly the same.

I will open the hood.

On my unit it would be the right most unit, but there may not be any pattern to it.

Thanks for your response DolphinHeart.

When I look at the web console we see Chain 1 to 4. If I look at a miner with the fan facing me where are chain 1 to 4?

I was running 7 C1s in South Florida, had an A/C running but in a large room so didn't do much. The room was definitely getting up to almost 30C in the room with all miners running overclocked.

Miner temperature was over 40C... close to 47C sometimes and were all running great!

I had two of them in a room with no A/C, stock clock.. they were running around 42C and also running stable.

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