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Author Topic: Pangolinminer & Whatsminer FAQs  (Read 24995 times)
NotFuzzyWarm
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July 27, 2020, 08:56:15 PM
 #541

I'll just mention that I put 6 Pangolin M20 units into service this January 2020, rated 45TH/s each. They all ran at that speed for many weeks, then, one by one over the next few months, most had dropped to 30-35TH/s and would not go faster.

Finally, over the period May 28 to July 23, all 6 units eventually died. They no longer boot up. The last one died a few days ago. Early on I sent emails to PangolinMiner requesting technical support/service but still haven't heard anything after at least a month. I had a couple dozen Bitmain S9's before this, but they had their own hardware issues over time so I gave Pangolin a try. Unfortunately the experience has been even worse.
Out of curiosity, what is the air temperature where they are running? I've found that unless the ambient is less than 30C the Whatsminers will never finish their tuning mode and as a result will run slower.

As for Pango support failing - surprised to hear it! While I've never had a serious problem with my M10's that I got from them it is rather distressing to hear that the company is slacking off. At least in the past, they had pretty decent service.

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July 27, 2020, 09:33:20 PM
Merited by frodocooper (3)
 #542

Yeah, I couldn't figure that drop from 45T to 30T out; the tuning process seemed to have completed successfully because there is a flag in the web interface that indicates when tuning completes. I let a few units cool down to ambient for 24h before powering them up again, thinking they might be running too hot; but my observation was once they took that initial drop from 45T to 30T they would never tune up to beyond 30T from a 'cold' start again; the 'factory reset' button didn't change that behaviour.

They were in an air conditioned datacenter since first arriving; ambient there is kept at 25-26C. Nothing different from when first powered up at 45T, to some weeks/months later when they would only power up to 30T. And now they won't power up at all. I can see a green light on the controller board itself, but none of the externally visible LEDs turn on, nor do the fans spin up.

I may have a bad batch; it happens. I've seen the usual posts here of some people having various Pangolin/MicroBT hardware issues, along with Bitmain hardware issues, etc. The usual expected issues. Nothing particularly out of the ordinary. Current mining hardware quality is generally known to be 'not great'. But I'm mostly disappointed by the lack of vendor support in this case. Butterfly Labs, Spondoolies, even Bitmain support was leagues beyond the silence from Pangolin. Not something I would have expected.
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July 27, 2020, 11:39:41 PM
 #543

Yeah, I couldn't figure that drop from 45T to 30T out; the tuning process seemed to have completed successfully because there is a flag in the web interface that indicates when tuning completes. I let a few units cool down to ambient for 24h before powering them up again, thinking they might be running too hot; but my observation was once they took that initial drop from 45T to 30T they would never tune up to beyond 30T from a 'cold' start again; the 'factory reset' button didn't change that behaviour.

They were in an air conditioned datacenter since first arriving; ambient there is kept at 25-26C. Nothing different from when first powered up at 45T, to some weeks/months later when they would only power up to 30T. And now they won't power up at all. I can see a green light on the controller board itself, but none of the externally visible LEDs turn on, nor do the fans spin up.

I may have a bad batch; it happens. I've seen the usual posts here of some people having various Pangolin/MicroBT hardware issues, along with Bitmain hardware issues, etc. The usual expected issues. Nothing particularly out of the ordinary. Current mining hardware quality is generally known to be 'not great'. But I'm mostly disappointed by the lack of vendor support in this case. Butterfly Labs, Spondoolies, even Bitmain support was leagues beyond the silence from Pangolin. Not something I would have expected.

Have you tried opening them and cleaning a bit and visual inspecting if anything is damaged?
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July 28, 2020, 02:06:35 PM
 #544

I had two of them apart and didn't notice anything obvious like charring or PCB/component discolouration. They were both quite dust-free, as their environment was clean. The fans were not seized; no rattling or loose components. I reseated all of the connectors I could find in case something vibrated loose or had some oxidization.
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July 28, 2020, 02:21:03 PM
 #545

I had two of them apart and didn't notice anything obvious like charring or PCB/component discolouration. They were both quite dust-free, as their environment was clean. The fans were not seized; no rattling or loose components. I reseated all of the connectors I could find in case something vibrated loose or had some oxidization.

I've had similar problem with my Innosilicon T2T 30TH, it was working fine all on modes and after halving I reduced it from top mode (performance) to lowest efficiency mode. And after a month or so of mining it just turned off and nothing helped it come back, I opened to check what is going on, control board was fine, hashboards were covered in heatsinks so I couldn't really see but when I opened the PSU... That's where the problem was, something burnt there and damaged it (for unknown reasons), I am yet to repair that PSU.

My point is... Check everything, even the things you doubt will go down. Like imagine forcing PSU at 100% for months and then lowering it to like 50-60% and it dies -_-
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July 28, 2020, 02:40:53 PM
Last edit: July 29, 2020, 12:32:25 AM by frodocooper
 #546

I've found that unless the ambient is less than 30C the Whatsminers will never finish their tuning mode and as a result will run slower.

Not the case with M21s, I managed to run this in extremely hot days (beyond 40c) and honestly it runs way cooler and much better than MOST bitmain gears, but I understand that different models/batches will perform differently.

Yeah, I couldn't figure that drop from 45T to 30T out; the tuning process seemed to have completed successfully because there is a flag in the web interface that indicates when tuning completes.

What was the voltage they ran on? the way you describe the issue tells me that your miners' PSUs weren't so happy with the voltage they had, either too high or too low.

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July 28, 2020, 02:53:24 PM
Last edit: July 29, 2020, 12:31:47 AM by frodocooper
 #547

208V, which is on the low end. The current draw into the PSU would be higher than if I had access to a higher voltage (higher voltages, hence lower currents, are generally more desirable). Having all the units go down in what appears to be the same way, over a narrow period of time, suggests to me the PSUs may have been driven too hard. I haven't taken one of the PSUs apart yet, but I'll do that just to see if there is anything to see. Now that I don't have any more working M20's, I don't have a trusted PSU I could swap in to see if the miner works.
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July 28, 2020, 05:55:46 PM
 #548

@Epoch
If they all died, could there have been a voltage drop, even way under 208 VAC? And thus, a high current in the input circuit could have killed the psus.

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July 28, 2020, 07:10:24 PM
 #549

They didn't all die at once, rather one at a time over a period of months. A few of them were already hashing at the much reduced rate of 30TH rather than their nominal 45TH, so they were already running at relatively tame current levels ... but a current overload due to brownout can't be discounted. I'll open up and do a close inspection of a few of those PSUs; I'm sure the hashing boards themselves are all fine, so I'm suspecting either the PSUs or controller boards at this point.
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July 28, 2020, 10:49:16 PM
 #550

208V, which is on the low end.

208v isn't low enough to toast those PSUs, but running them on unregulated voltage can easily kill them, depending on the electricity infrastructure, voltage drops could be so severe and that 208v point might not have been there all the time, there is a chance that you got a bad batch if that was the case we would be hearing more complains from more people, I am fairly active on all mining groups across all things internet (this forum, telegram groups, FB, and etc.) bad/low-quality batches are usually heard off in a short period of time, so I tend to kind of negate the batch issue, because there is no way that they would make only 6 bad units.

So my thought which is the same as the initial one is that the PSUs are causing the issues, I haven't looked inside a Whatsminer PSU but I am pretty confined that all new PSUs are pretty hard to fix or at least hey were not made to be fixed, but there is always hope, what I would do is get a used/new PSU and test it on all those units, for obvious reasons in somewhere where you know your voltage is stable above 200v.

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July 29, 2020, 09:03:44 AM
Merited by philipma1957 (2)
 #551

I think Dr Yang, CEO(?) is still in police custody, which is not ideal.

But are whatsminer still shipping and manufacturing all good?

thnx
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July 29, 2020, 11:55:56 AM
Last edit: July 30, 2020, 02:53:07 AM by frodocooper
 #552

Pangolin has had its issues.  But there are more ways to order and get whatsminer goods.

Miner Expert -- https://bitcointalk.org/index.php?action=profile;u=2706610
OffordScott --  https://bitcointalk.org/index.php?action=profile;u=1449095

both here and on telegram have them in stock

if you are in china

Miner Expert  is run by Grace Zhou.  Well she is the front man so to speak.  She has been a good seller.

Does anyone know the current story on Dr YANG? HAS HE BEEN SET FREE?

I see BTC as the super highway and alt coins as taxis and trucks needed to move transactions.
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July 31, 2020, 05:48:59 PM
 #553

He goes by Oliver I believe for us english speakers and is pretty active day to day. Not sure that says much about his physical freedoms though.

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December 03, 2020, 01:14:53 AM
 #554

I didn't want to start a new topic, but can someone link me to a valid legitimate pangolin miner website to look at a new miner purchase?
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December 03, 2020, 12:26:22 PM
 #555

I didn't want to start a new topic, but can someone link me to a valid legitimate pangolin miner website to look at a new miner purchase?

Manufacturer: https://www.microbt.com/?locale=en


Distributors:

https://pangolinminer.com/557-2/

and

https://whatsminer.net/shop/

However, stock is extremely limited.

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December 03, 2020, 02:02:12 PM
 #556

thanks man! appreciate it. I lost 1 board on my s17+ so before I pull the plug on a s19 wanted to shop around
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January 23, 2021, 10:39:32 PM
 #557

Any news on Pango? pangolinminer.com has been down some days and at least 1 of their farms shut down a couple of months ago for sure, I had miners there that had to be moved.

 Hope they didn't go away, I had decent experiences with them.
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January 23, 2021, 11:11:39 PM
 #558

They have been silent on their Telegram channel as well... Sad

I left the channel because there was only random spam posted

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January 24, 2021, 05:06:36 PM
 #559

They appear to be vanished.

I see BTC as the super highway and alt coins as taxis and trucks needed to move transactions.
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January 26, 2021, 03:41:13 PM
 #560

They did message me some months ago stating that the Chinese government was going to tax BTC, so they were considering moving the farm to Iran, I said , no thank you and asked to ship my miners, which they did, 28 of them without power cords, Ha.

One of their farms had stopped hashing months ago but a second one was working as of the 1st of January.

Too bad, other than that I had had good experience with them.
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