Topic: Bitmain Announces the Antminer R4 and APW5 Power Supply, Designed for Silence - page 14. (Read 84827 times)

They will most likely ask you to pay shipping to return it.  You have to return the entire machine.  Depending on your shipping quote, you may also consider bitmainwarranty.com, which will probably charge you about $200 for the repair and you will get it back faster...

QUESTION ON RETURN TO BITMAIN

R4 failure 2 days out of the box. Ordered 2 units one working great, the second shows status view and log below.



End of Kernel Log:
total valid nonce number:57456
total send work number:57456
require valid nonce number:57456
repeated_nonce_num:0
err_nonce_num:74779
last_nonce_num:82378
chain[6]: some chip cores are not opened FAILED!
Test Patten on chain[6]: FAILED!
chain[7]: All chip cores are opened OK!
Test Patten on chain[7]: OK!
restartNum = 2 , auto-reinit enabled...
Chain[7] Chip[3] TempTypeID=55 middle offset=-5
Chain[7] Chip[3] local Temp=57
Chain[7] Chip[3] middle Temp=85
Chain[7] Chip[4] TempTypeID=55 middle offset=-6
Chain[7] Chip[4] local Temp=47
Chain[7] Chip[4] middle Temp=68
FAN PWM: 62

I shook unit and listened for loose heat sinks before powering. There were none.

I upgraded to the latest firmware
File System Version   Fri Dec 2 00:35:43 EST 2016
and followed instructions that Bitmain provided to others earlier.

I'm getting the normal "green" LED, have both boards still hooked up and drawing 708W at the wall at the hash rate of 4.3 TH/s.

Reviewing return policy on Bitmain site and notes in this topic are confusing. When I try to put in a support ticket they want the tracking info but I'm not even sure where or what to send.

Do I send the whole R4 in or just the bad board?

Do I ship to China address and does Bitmain pay for shipping or do I?

Help please Bitmain

Ah what wonderful timing.... Of course CNY is very soon starting and....

Yesterday got my 1st R4 batch-6 that I ordered last week. Was running perfectly with amazingly smooth hashrate. Emphasis on was... After 22hrs the top board (chain-8) now at best reports 55 chips vs the normal 63 and does not report temps. The 2nd batch-6 I ordered shows as being picked and will prolly ship tomorrow. Hope it fares better...

Still the same amazingly smooth hashrate though, banging around 5-5.7THs of course mostly from the good board (4.4THs) vs bad board of 1-1.4THs. The top 2 with their variance are what I normally see from ALL of my s9's. The start-stops seen are from my testing to verify bad board. Even my R4 batch-4 shows the same spikey throughput as the s9's but the R4 batch-6... scarily smooth.

Lovely time to start the RMA process eh?



To save space, links to screen shots of tests I ran. Tried soft-boot, hard-boot, and swapped data cables between top board (chain-8) and bottom board (chain-7).
Yes I know the logs show the chains as 6 and 7 but whatever. The GUI calls them 7 and 8 and so will I.

http://imgur.com/fd2ukLx
http://imgur.com/OFTZqpt
http://imgur.com/mI0a7JJ
http://imgur.com/jlF0MnZ

 This will of course be part of the info I send Bitmain as will be the interesting Kernel Logs resulting from the tests. All of the logs below are massively snipped to stay under forum size limits. However the full logs show very extensive logging going on - right down to the number of good cores per-chip. along with which core number(s) is bad in each chip(s). Very nice to see that!

After soft boot
After hard-boot
Data cable swapped between top and bottom boards, hard-boot, problem follows top board

Yeah  I would hate for it to break.

I got very lucky with timing the purchase.

I paid 1.091  when I first checked it was 1.21 btc  yesterday's rally to 915 a coin   dropped me to 1.091 ,

Basically  I saved over 80 dollars by good timing.

Phil, hope your percentage is better than mine... Got 2 R4's, one is hashing on one board so total of only 75% of the hashrate I paid for, and 50% failure rate (for this small sample size tho) 

yeah.  I am going to sell off some gpus.

Nice!   Will that be your 2nd R4?

yeah sitting here thinking I will buy one and sell some gpus'

and I grabbed one

https://blockchain.info/tx/886ff81292fee4bd180bdd9b3e0fef85e846d827a681867f0301e2c7e7c7e28a

And I too picked up another R4 batch 6 today since BTC is over $900 again
Need it to replace the 2 s7's I've been running at home for Winter heating. Just too power hungry at 15-cents/kWh even if they do reduce the gas bill.. At least the 2x early batch s9's in the basement still fully pay for their feed and more.

So far very happy with the batch 4 I picked up earlier which is running silently sitting in my office by my desk.

Does not exist.
 As has oft been said before: Auto-tune exists so Bitmain can use all the rather variable performing dies (chips) they can get from each wafer produced by TSMC. By being able to have each hash board run  at its 'optimum" (in my book - run reliably at all) Vcore/freq/Temp settings Bitmain is able to mix and match different performing boards to produce advertised specs. Once Auto-tune finds those volts/freq/temp settings per-board that it thinks are best the information is stored in the PIC of each hashboard for faster reboots (methinks).

Anyone have firmware that removes the auto frequency and allows any kind of tuning to freq or voltage?

with coins shifting upwards I can get the 7.5 model including shipping for 1.111 btc

I purchased 2 coins last week at 800 each.

so 800 x 1.111 =   $888.88

pretty tempting .  Warranty is 180 days.

I think I will buy it.

One thing to consider is this gear will do .1 watts per gh  while the new t9 will do .121 watts per gh.

I put the order in a few minutes ago I have a bit of time to decide.

Yeah, one might think that an increased warranty period would mean the company in question believes their equipment is more reliable and hence fewer returns... 

Thank you. I might have stumbled onto the general sales page then. I was expecting 180-day, and will be disappointed if less otherwise.

Right here on the sales page, first line in the warranty section...
https://enshop.bitmain.com/productDetail.htm?pid=00020170113035124055C7pSkE6a066C

FYI - for those interested, my R4's from batch 6 have shipped.

How can i confirm that? the sales page still reads 90-day.

The warranty is now 180 days, which is a half year.

I tried searching myself: Who is mining with two R4's powered by a single APW5 PSU inside the United States?  I currently own a single R4 batch #2 and APW5 PSU.  I am interested in purchasing another R4, however I will need an electrician to install a new outlet for me.  I assume a 220V?  I'm curious what all is required.  I assume a C13 power cord to a specific outlet, but unsure of the outlet type?  I'm not sure where to search further.  Thank you in advance.  Ps. My batch #2 R4 quit hashing on one board after several days, but after flashing to a new firmware image from the bitmain website and rebooting, I have not had any issues since.

Keep hoping........

Bitmain has approximately zero reason to extend the warranty or otherwise improve their terms. Maybe they'll reconsider if/when a batch takes a week to sell out?