Topic: ANTMINER C1 Discussion and Support Thread - page 2. (Read 129136 times)

Most used the radiator from syscooling, it was ok. Their pumps and harness was utter crap (harness depends on version though).  But there should be a lot of radiators from syscooling kits from dead C1's.

I would try to find a dead C1 owner and buy the radiator.  I know when one of my C1's died I parted it out.  I figure others chances are do the same.

question this is the hard part for me what radiator should i use with this pump and tank which I have now

http://www.amazon.com/gp/product/B0056LRJD4?psc=1&redirect=true&ref_=oh_aui_detailpage_o02_s00

http://www.amazon.com/Swiftech-MCP50X-Extreme-pressure-centrifugal/dp/B00OWKVYR2/ref=pd_bxgy_147_img_2?ie=UTF8&refRID=0X2JT8N375VZK6318DJ0

I did a lot reading and watched lot of videos etc on which one is best and even read this thread a lot . I'm being lazy now for the last part the radiator.


if anyone would be kind enough to link a few good radiators that would be great. or will the one that came with the C1 be ok , i plan to upgrade the miner to bitfury chips if that happens and  we can get boards that fit .

I know we don't know yet how hot or what cooling we need i can use that else were like on my PC for fun if i have to . the pump and tank had very good reviews all most any place i looked.

His screenshot show 150 freq but he stated:

"I then flashed the most recent firmware from Bitmain and started mining at 250Mhz/ 0.760. "

The 150 freq came about due to FRIED boards after running his C1 at 250Mhz/0.760.

Most home miners have no concept about how electronics work. Just because some Chinese salesman said you can run your miners at 250Mhz/0.760 does NOT mean you should do it. If you did a minimum amount of research yourself, you'd have found out not only BMT's shoddy record in QA/QC but also their cruddy after service record. BMT ASIC's come in WIDE range of characterisitics, they're not like Intel or Samsung or other reputable chip makers. BMT's philosophy is to mass produce chips and no waste, not even substandard chips. ALL produced chips make it to their miners, nothing gets tossed aside. It means, your miners may contain at least some substandard ASIC's, guaranteed in almost all cases. Of course, when they test, they will pick out the most promising miners and produce optimum hashrate and wattage. Most people are stupid, they know it, we know it and you know it's true.

Well, they were the cheapest I could find in Europe on reliable sites.

I'd be happy to expand my mining Base if you have tips to share (in PM)

you paid too much! for 2 s3+ i wouldn’t pay even 200pounds!

OK, i'm looking for one so obviously this one is too expensive ?

I bought 2 S3+ from this seller without PSU for under 250£

For an c1? You joking right?
I sold an c2 for ~335gbp and i paid the shipping!

Do you think that 300£ without cooling and PSU is a fair price ?

If you are using a C1 you should make a backup of your SD card when it's working.  That's what I did and if anything went wrong you can just flash the SD card with old firmware and it was easy.

That would be my advice on it if you have a backup try it.   And if you don't make a backup and see what a new FW does.  It helps rule out software and with C1 the SD option is great in case of bricks.

well the screenshot show freq@150...

oh god I just discovered that today... and now I can not think about anything else....

a watercooled miner.... my 2 crazy hobbies :p

Now let's try to find one and.... figure out how to pay for it

When running I would no be messing with PCIe cables plugging in or out.   I would do this with PSU off, as i you do when running your are unplugging and plugging in a live cable... so not the best idea.

The C1 is a little trouble to troubleshoot with the water it add's kinda a pain.   What I tried on mine was repasting, I just did not have the time.  But I sold as parts and I think after it was repasted 3 out of 4 blades worked.  This is kinda last resort though I would try everything else before looking under and doing this.  But if you do I suggest looking at amazon you can buy a small tub vs the standard syringe, and get much more paste.

Hey Guys,

one of my 3 C1s is not functioning normally anymore.
It started about one week ago, when I noticed that the fan of this particular miner was running at full speed and I was not able to access it via the web interface. Shutting the device on and off resulted in the same issue: fan starts and continues to run at full speed, no accees to the device.
Since also the hard-reset did not work, I took out the SD-Card and flashed the Stock Rom from dogie. After inserting the SD-Card back into the C1, I was again able to access it and everything looked normal. I then flashed the most recent firmware from Bitmain and started mining at 250Mhz/ 0.760.  

However after a few minutes, the temperatures of Chain 4 first started dropping and then increasing to up to 125°C, with the fan running at full speed, causing the C1 to stop mining. Guess the temperature reading is not correct since the heatsinks (I currently am operating the device without the case) don't feel hot at all. After shutting off the miner, waiting for a few minutes and then turning it on again it starts hashing again for a while  before the whole issue starts over again.
After doing a software reboot while the fans are running at full speed, I noticed that Chain 4 only shows 15 instead of 16 ASICS. Still fans continue to run at full speed and no hashing. Furthermore the Load Average is far smaller than the one from my two other C1s.

In short:
Hashing --> Temperature of Chain 4 drops --> Temperature of Chain 4 increases --> Fan starts running at full speed --> Miner stops mining (and the status light starts blinking red)


What I have tried so far:
- flashing the bitmain firmware (dec 14) again
- trying different frequencies and voltages
- adding PCI-E cables to make sure it's not the PSU
- connecting the radiator and the fans to another Chain
- trying to start the miner without Chain 4 by disconnecting the cables (but it won't start)

Did anyone here experience something similar before? Any idea how to solve this problem?

One more thing: can I pull out the PCI-E (6-Pin) cable connected to Chain 4 while the Miner is runnning or do I risk damaging the hardware doing that?


http://i.imgur.com/Vs62L3j.jpg 10m

http://i.imgur.com/5jqn6gn.jpg 20m

http://i.imgur.com/xtNVWvt.jpg 40m

http://i.imgur.com/AgEiYnM.jpg Load

Every help greatly appreciated

it is not, it's made of steel. I have been told that steel and alu does not react, but I have ordered the anti-corosion stuff anyway.

But I have to say it is pretty great, the heat seems to be even in whole room and it's really silent. On the side note, I have aftermarket pump and I am not sure if it will hold for whole winter, it seems it's got a hard time pumping the large amount of water :| I was thinking about drilling holes into another room (hallway), make tubes go there and buy a little stronger pump (20-30w). That way it will be completely silent in my room + less messy look + i wont have to stress about pump dying.

same shit that i want to do! just put it in like another radiator in the heating loop!

Nice setup. Is your radiator in aluminium?

The C1 is best anyway...


http://imgur.com/tszo8AI

This C1 has a higher temperature on chain 3.  I use separate supplies on each card.  I've lost two supplies on this machine, this card, so obviously one or more of the ASICs on the card is drawing higher current.  About 10 minutes ago I disconnected power to the supply on the card that blows supplies and the temperature on chain 3 came down and of course the hashrate dropped by 25%.  Curiously, ASIC status shows all to be o's, even the chain with power disconnected!

-----------------

Interesting, here it is sometime later, I changed my miner config for a misspelling in a pool, now chains 2,3, and 4 are alive while 1 shows dashes.  The hot chain was #3, was disconnected, is now chain 1.

I just fixed a similar problem.  The power was momentarily interrupted and restored to the C1.  The controller card stopped communicating.  I downloaded the stock image.  Putting the SD card into a reader on a Win7 machine.  The machine asked to scan and repair the card.  I said no.  Using the HDD Raw Copy Tool, I started to write stock image to the card.  It hung very quickly.  I shut down the process and ejected the card then reattached the card reader.  This time when Windows asked to scan and repair errors I said yes.  When I ran the HDD Raw Copy Tool it wrote the stock image to the card 100% no problem.  Then of course I had to reconfigure the card which woke up at 192.168.1.99.  Afterwards I wondered if I had run the scan and repair then put the card directly back in the machine if it would have worked with all the original settings.