Pangolinminer & Whatsminer FAQs

[favebook]

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 -_-

[mikeywith]

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.

[Epoch]

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.

[HagssFIN]

@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.

[Epoch]

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.

[mikeywith]

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.

[Sundance_]

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

But are whatsminer still shipping and manufacturing all good?

thnx

[philipma1957]

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?

[minefarmbuy]

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.

[DickyDck]

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?

[Biffa]

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.

[DickyDck]

thanks man! appreciate it. I lost 1 board on my s17+ so before I pull the plug on a s19 wanted to shop around

[ZimbaCardi]

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.

[HagssFIN]

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

I left the channel because there was only random spam posted

[philipma1957]

They appear to be vanished.

[ZimbaCardi]

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.

[philipma1957]

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.

I purchased

 1 m3
10 m10s
2 m20s
1 m21s

most from them.

They were okay maybe a 6 or 7 of 10 for me.

[ZimbaCardi]

I purchased

 1 m3
10 m10s
2 m20s
1 m21s

most from them.

They were okay maybe a 6 or 7 of 10 for me.

Any chance you can point me to a source for M10 PSU's? I need 4 desperately in a farm in Colorado.

[philipma1957]

hmtech.co got me some m20s psus

mention me and bitcointalk as he helped three or four of us.