This is for bitcoin mining support only..

you need to go to the mining altcoins subforum --> https://bitcointalk.org/index.php?board=160.0

Can you please connect a fully working hash board to the controller port J5?

If it is working ok, then I would say that the control board is ok.
And that there is one faulty hash board.

Yeah it looks like 13-13.5 Th/s S9 is a sweet spot for good performance and for good lifetime.

Yeah, I'm guessing either the control board or the hash board connected to J5 is faulty.

@andygi
It seems like there is some issue with the PIC Firmware in the hash board (chain 5).
Can you unplug both data and power from that hash board?
It should be connected to the controller data port J5.

You could that way find out if the machine is able to operate when that hash board in unplugged.

If you end up finding that the hash board has this issue, you need a warranty repair.

Bitmain service guide: https://shop.bitmain.com/workOrderGuide.htm

EDIT:
You can see this picture as help to identify which has board is connected to J5.
I have marked each connector name location with blue marking.
https://i.imgur.com/Lnvbe0A.jpg

If you enjoy this document and decide to buy some WhatsMiner M3 machines,
you can use my referral link if you would like to support my work.

HagssFIN referral link (Pangolinminer.com shop): https://pangolinminer.com/?ref=HagssFIN

Can you measure the power or current with one of these tools?

Energy meter.

or

Current clamp meter.

Are you sure you are not overloading that circuit?

Which fuse are you talking about?

Yeah no wonder, the 8 series has a lower target temp than earlier AvalonMiner series,
because commonly the more you develop those asic chips to be better and go towards smaller node processes,
the more heat sensitive they are.

But it's a good thing that those temps lowered a bit,
it makes it more likely for the machines to have a long lifetime.  

Nice.
Did the miner temperatures also go down a little in your 60 machines setup?

@Thetaj
Thanks Thetaj. 

Great.
Were you able to achieve a better power efficiency level?

Yeah, Kevin from Orion Miner contacted me as well and said that they want to have a phone conversation with me.
I sent him my email and Skype username.

Good day to you too, sir.  

Hurr durr, herp derp.

I'm still pissed that they sold first A5s at 10000USD and they don't think they did anything wrong in first place.

It is my worst miner investment ever, I don't think I'll ever make any worse decision than buying a A5 unit.

I haven't received any compensation.

I haven't received any coupons.

Nothing.

Sorry to hear that. 
The bureaucracy is sometimes very strict.

This is a very cool project and as an electrician and electrical engineer student I'm getting a huge pleasure watching this. 

Thanks Phil.  

By the way, the nicely formatted version of this review/guide (.pdf document) is now available for download here:
https://mega.nz/#!pgFTGJhB!ZvhhzJ1BEJEpC_FBJzJLA4WQG_af9jLfyO0whOCocdY

You can run both 821 and 841 with same controller unit, no issues.

It's really hard to get a simple answer for some questions.

I don't know understand why Yoshi agrees on kicking me out of the Dragonmint telegram chat.
I still see that as a act of sensorship, I'm not able to re-join the chat. So it was a permanent ban.

I don't see why my questions are so f*cking irritating to them.  

I have shown clear evidence to back my comments, I haven't posted anything based on some kind of a hunch.
Funny detail also that MyRig is now taking Innosilicon hardware for repair.  

https://imgur.com/a/1XIfL

Voltage Offset in this case means changing the voltage that is supplied to hash boards a little.

The Wiki page you linked is not exactly about the same subject.

No, but I'm sure Steven will tell us about the Warranty details
once all the details are planned.

The goal will be that in most cases Canaan would send a new spare part
and the user would be able to change that new part by himself.

I will make a troubleshooting & repair guide as well, but it is yet a work in progress.

Thanks,
but don't underestimate yourself, I would love to see some other A841 reviews besides my review.