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Topic: Antminer R4 - dead hash board? Shitty design, read before you send it back (Read 12313 times)
August 31, 2018, 02:58:02 AM
August 21, 2018, 06:13:07 AM
Both machines have two sets of stickers on the case. I can say the boards on one have stickers for 600m. Both are below 85ºC chip temps oriented vertically in a 75-78ºF room. Consuming 908 watts at the wall with APW5.
Sweet details! I tried the IP reset + power cycle option to no avail. I'll give it another go with some of the other techniques mentioned however I'm concerned the very latest firmware released may have removed the option. According to records, the miners with the 'sd card' slot to the left of the Ethernet port, which the R4 is one, should be able to be pushed back to factory firmware using the method of power off, hold IP reset, Power on while still holding and release five seconds later to set back. It didn't work on my 8.7 with that method but maybe I held it down for too long. (That shouldn't matter.. )
Thanks to all for the details shared in here. It's good to see support for this 'old' hardware. I buy used units for anyone wanting to liquidate. I also repair boards with the burnt PCI-E ports.
August 16, 2018, 09:53:55 PM
Both machines have two sets of stickers on the case. I can say the boards on one have stickers for 600m. Both are below 85ºC chip temps oriented vertically in a 75-78ºF room. Consuming 908 watts at the wall with APW5.
August 13, 2018, 09:03:21 PM
I’ve got two running in my office which I bought used and applied this method to restore them both to factory. No idea when they were produced. Can say that neither were hashing at 8.7TH/s prior to the reset, but are hashing beautifully set at 612.
Excellent - I'll check if any of mine or my customers are able to do so as well.
I've successfully repair the burnt Pci-e connectors on many of these but some of them I think would benefit from a lower hash rate for sake of heat.
I also noticed in repairing a board that the unit came with two stickers - one showing a slightly lower hash rate on top. Is this from a refurb or just a misprint, I wonder.
After resetting yours, you mentioned it's running at 612 - do yours happen to appear to have multiple sets of hashrate stickers on the case as well?
August 13, 2018, 08:45:51 PM
I’ve got two running in my office which I bought used and applied this method to restore them both to factory. No idea when they were produced. Can say that neither were hashing at 8.7TH/s prior to the reset, but are hashing beautifully set at 612.
August 13, 2018, 08:22:30 PM
Have you tried this? https://bitcointalksearch.org/topic/m.18267781
EDIT: I can confirm that it resets a R4 batch-6 back to BMiner v1.0 file system date Tue Aug 9 21:00:51 CST 2016.
It also resets all pool info back to Factory so you will have to re-enter it.
Good bit is: Auto-tune is GONE! IT GIVES BACK FREQ and FAN SPEED CONTROL!
To do:
Power off miner
Press and hold in the IP REPORTER button.
While holding the button in, turn ON the miner power
Continue to hold in button for 5-7 sec and release
Wait a few min an you should be able to re-enter your pool info.
Enjoy!
Caveat: Since it runs BOTH boards at the same freq, if one is er, weak, you would have to downclock the good one until the weak one is happy....
Or apply the correct R4 update and get Auto-tune back...
EDIT: I can confirm that it resets a R4 batch-6 back to BMiner v1.0 file system date Tue Aug 9 21:00:51 CST 2016.
It also resets all pool info back to Factory so you will have to re-enter it.
Good bit is: Auto-tune is GONE! IT GIVES BACK FREQ and FAN SPEED CONTROL!
To do:
Power off miner
Press and hold in the IP REPORTER button.
While holding the button in, turn ON the miner power
Continue to hold in button for 5-7 sec and release
Wait a few min an you should be able to re-enter your pool info.
Enjoy!
Caveat: Since it runs BOTH boards at the same freq, if one is er, weak, you would have to downclock the good one until the weak one is happy....
Or apply the correct R4 update and get Auto-tune back...
Thanks for this - Do you know if this technique works with the most recent firmware? Other comments suggested that the newest versions might disable that reset option. (Does anyone here even still have an R4 other than the most recent post about hairdryer revival method?)
July 21, 2018, 04:34:56 AM
My unit is still running great. I once had to warm it with a hairdryer before getting it started, other than that it’s been nice.
July 18, 2018, 09:37:26 PM
This doesn't seem to work on the newest firmware, I haven't found a way to revert it, thankfully it was just on my test failed board unit.
Use caution if you upgrade the firmware now, because you might not be able to go back.
Use caution if you upgrade the firmware now, because you might not be able to go back.
I found this a bit too late in the game - still I do not know a way to revert to firmware with custom tune instead of auto.
Why ever would ‘remove’ an option be the default !? JUST ADD OPTIONS DIMBITNITS!
June 19, 2017, 01:28:27 PM
This doesn't seem to work on the newest firmware, I haven't found a way to revert it, thankfully it was just on my test failed board unit.
Use caution if you upgrade the firmware now, because you might not be able to go back.
Use caution if you upgrade the firmware now, because you might not be able to go back.
May 16, 2017, 02:47:01 PM
Have you tried this? https://bitcointalksearch.org/topic/m.18267781
EDIT: I can confirm that it resets a R4 batch-6 back to BMiner v1.0 file system date Tue Aug 9 21:00:51 CST 2016.
It also resets all pool info back to Factory so you will have to re-enter it.
Good bit is: Auto-tune is GONE! IT GIVES BACK FREQ and FAN SPEED CONTROL!
To do:
Power off miner
Press and hold in the IP REPORTER button.
While holding the button in, turn ON the miner power
Continue to hold in button for 5-7 sec and release
Wait a few min an you should be able to re-enter your pool info.
Enjoy!
Caveat: Since it runs BOTH boards at the same freq, if one is er, weak, you would have to downclock the good one until the weak one is happy....
Or apply the correct R4 update and get Auto-tune back...
EDIT: I can confirm that it resets a R4 batch-6 back to BMiner v1.0 file system date Tue Aug 9 21:00:51 CST 2016.
It also resets all pool info back to Factory so you will have to re-enter it.
Good bit is: Auto-tune is GONE! IT GIVES BACK FREQ and FAN SPEED CONTROL!
To do:
Power off miner
Press and hold in the IP REPORTER button.
While holding the button in, turn ON the miner power
Continue to hold in button for 5-7 sec and release
Wait a few min an you should be able to re-enter your pool info.
Enjoy!
Caveat: Since it runs BOTH boards at the same freq, if one is er, weak, you would have to downclock the good one until the weak one is happy....
Or apply the correct R4 update and get Auto-tune back...
this works thanks..
I still have a dead board but I like freq control and fan speed
May 12, 2017, 11:32:41 PM
They have a repair shop in Los Angeles but you have to ask for US repair site.
As you may have noted, news of a North American in-warranty repair depot is news to us! This is the first real mention of it by anyone so:Bitmain provides warranty repair in Los Angeles, CA in US 
.
What you talkin' 'bout Willis?. Got an address/contact info?
OOh Bitmain, How about letting folks know about this eh?
Must be because
Quote
OTH, since shipping to China can be/is a rather daunting process I am sure it discourages a lot of folks from getting their gear fixed...
It did me with my gimpy R4 batch-6. As noted elsewhere in this thread the top board died after 24-25hrs of running. Having shipped just some s7 boards to China cost about $140 as I recall. Only had to do that 2x and of course declared value of only $40.Shipping the whole R4 there - not going to happen especially since you cannot insure/declare full replacement value without China's Customs stepping in and of course, charging a fee for it.
BitmainWarranty in Colorado - no issues so don't care if is paid-only.
Official Bitmain North American in-warranty repair depot I would use in a heartbeat : a) even if have to ship entire miner a helluva lot cheaper! and b) No problem insuring for replacement value if the miner goes a-wandering never to be seen again or such.
May 12, 2017, 10:57:33 PM
They have a repair shop in Los Angeles but you have to ask for US repair site.
What you talkin' 'bout Willis?
May 12, 2017, 06:13:59 PM
Actually Bitmain Warranty has a repair service location in Denver, Colorado.
I've never heard about any Los Angeles location.
A few months ago during the heyday of R4's and s9's dying on the vine I *think* I remember brief mention about Bitmain opening a warranty-repair depot in the US. However, looking at Bitmains RMA instructions there is no mention of an option to send to a North America location. Nor have I seen any mention since about people having that option. I've never heard about any Los Angeles location.
Yes, it would be great if Bitmain did that. OTH, since shipping to China can be/is a rather daunting process I am sure it discourages a lot of folks from getting their gear fixed... Open a North America location and safe bet it would be very busy meaning more cost to Bitmain.
May 12, 2017, 02:20:35 PM
Actually Bitmain Warranty has a repair service location in Denver, Colorado.
I've never heard about any Los Angeles location.
I've never heard about any Los Angeles location.
May 12, 2017, 02:15:13 PM
Bitmain provides warranty repair in Los Angeles, CA in US .
What you talkin' 'bout Willis?. May 12, 2017, 02:04:56 PM
Bitmain provides warranty repair in Los Angeles, CA in US .
They can save return shipping and maybe in future they can make money from out of warranty repair. It's really easy for them to repair.
. They can save return shipping and maybe in future they can make money from out of warranty repair. It's really easy for them to repair.
You referring to https://bitmainwarranty.com ? Unless they recently changed, they are PAID repairs only. While connected with Bitmain they are NOT part of Bitmain and do not do warranty repair for them in the US. Has that changed very recently?
As for the T9 - one word: Reliability. As in near-zero complaints/problems.
Yes I like the slightly better eff/speed most s9's have but am also very willing to pay for better reliability. Been buying Avalon's as well for the very same reason.
As for the T9 - one word: Reliability. As in near-zero complaints/problems.
Yes I like the slightly better eff/speed most s9's have but am also very willing to pay for better reliability. Been buying Avalon's as well for the very same reason.
May 10, 2017, 09:43:54 PM
Bitmain has warranty repair in US now so you don't have to send to China Turnaround is super fast. I sent in a few R4 for warranty repair
I still don't understand why they make T9. People will buy S9, instead of T9.
You referring to https://bitmainwarranty.com ? Unless they recently changed, they are PAID repairs only. While connected with Bitmain they are NOT part of Bitmain and do not do warranty repair for them in the US. Has that changed very recently? Turnaround is super fast. I sent in a few R4 for warranty repairI still don't understand why they make T9. People will buy S9, instead of T9.
As for the T9 - one word: Reliability. As in near-zero complaints/problems.
Yes I like the slightly better eff/speed most s9's have but am also very willing to pay for better reliability. Been buying Avalon's as well for the very same reason.
May 10, 2017, 09:00:32 PM
Bitmain has warranty repair in US now so you don't have to send to China Turnaround is super fast. I sent in a few R4 for warranty repair. They offered me T9 or repair. I prefer R4. With summer coming, I favor quiet and cool. I have 20 R4's. Some have been running for a few months without any problem. The ones that had problems usually showed problem immediately. I suggest Bitmain to redesign and improve R4. I still don't understand why they make T9. People will buy S9, instead of T9.
Turnaround is super fast. I sent in a few R4 for warranty repair. They offered me T9 or repair. I prefer R4. With summer coming, I favor quiet and cool. I have 20 R4's. Some have been running for a few months without any problem. The ones that had problems usually showed problem immediately. I suggest Bitmain to redesign and improve R4. I still don't understand why they make T9. People will buy S9, instead of T9. April 27, 2017, 04:33:19 PM
Bitmain Warranty fixed another R4 board for me, faster turnaround and worked well.
Kind of sad when one bad chip messes up the chain, but I suppose that's a tradeoff for the design. At least Denver has a faster turnaround and cheaper repair than going to China, plus no customs or international shipping madness. Much better.
Also patched the antbleed bug on my systems, hopefully that won't be an issue in the future either.
Kind of sad when one bad chip messes up the chain, but I suppose that's a tradeoff for the design. At least Denver has a faster turnaround and cheaper repair than going to China, plus no customs or international shipping madness. Much better.
Also patched the antbleed bug on my systems, hopefully that won't be an issue in the future either.
April 11, 2017, 12:12:11 AM
7 out of 20 are defective with all kinds of issues. Just figured out that one has bad controller. Bitmain will send me a replacement.
I am trying to try your approach for issues like one hard board was shown. I wonder whether your approach works for bad ASICs? Thanks!
I am trying to try your approach for issues like one hard board was shown. I wonder whether your approach works for bad ASICs? Thanks!
Sorry if my explanation is too complicated.
1) turn off the miner
2) unplug working board
3) start miner until it hashes.
4) if you are lucky, it will recover bad board
5) turn off miner
6) plug good board back
7) start miner until it hashes.
if you are lucky, you have both working boards
9) if you have bad luck, try it again. You can also try start "single-board-test" program via Putty several times.
NEVER stop or apply changes before miner start hashing. It killed my board, but I recovered it by previous steps.
1) turn off the miner
2) unplug working board
3) start miner until it hashes.
4) if you are lucky, it will recover bad board
5) turn off miner
6) plug good board back
7) start miner until it hashes.
if you are lucky, you have both working boards9) if you have bad luck, try it again. You can also try start "single-board-test" program via Putty several times.
NEVER stop or apply changes before miner start hashing. It killed my board, but I recovered it by previous steps.
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