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1  Bitcoin / Mining support / Re: S9 fans speed get slower if applying external cold air? on: July 05, 2018, 09:18:16 PM

Ebay Item I am using this on my Miners both side.
Amazon Item Using that on both side. One duct in the back of miner which will come all the way from my cold room (Might be you can use same way to your intake instead of cold room you can use either one vent of AC or directly from outside) and the front one goes to Heat room which is sealed and had 2 exhaust fan for air exhaust.

Thanks. One question, can I cut the Aluminum Foil Duct? or should I buy one for each side?
2  Bitcoin / Mining support / Re: S9 fans speed get slower if applying external cold air? on: July 04, 2018, 09:02:40 PM
good I am glad you did not feel too angry.

so lets go slow  to a fix.

1 unit  in the box   how big is the box  and how big are the tubes you use?

also how long are the tubes?

big tube diamater help  10 inch  not six inch.
shorter tubes help  
how warm is the room?

70f  = good
80f   = okay
90f   = not so good
100f = bad

next  the exhaust tube gets the air out of the room correct?

If you have a long exhaust tube  it will need a fan  to pull the air out.

I'm attaching two pics:

https://i.imgur.com/AB3qL06.jpg

https://i.imgur.com/hAumkxO.jpg

I just used the extra acoustic foam in the pipes (outside) because it looks better. And I have of course the foam inside each pipe.

Temperature in the room is okay. And in fact pipes are 6 inchs.

I'm planning to build this cooler:

https://www.youtube.com/watch?v=Ts35DI5MZO4
3  Bitcoin / Mining support / Re: S9 fans speed get slower if applying external cold air? on: July 04, 2018, 05:20:40 PM
You are doing  a lot wrong.  people say be polite  and don't write nasty things so I put my honest thought that first came to me when I read your post.

Note they are in code  so as to try to be gentle to you  but still show how strongly I feel about what you did.

Code:
what are you a fucking moron!

113c temps  jesus fucking christ  you are crazy!

Then what is your solution that covers both, noise isolation and fresh temperature?
4  Bitcoin / Mining support / S9 fans speed get slower if applying external cold air? on: July 04, 2018, 05:00:28 PM
Hi, I have an Antminer S9 and due to the extreme noise it makes, I put it inside a box with two pipes for each fan. Each pipe has acoustic fiber for noise reduction, however the S9 gets very hot (up to 113 ºC) and the red light next to the ethernet port starts blinking and it stops hashing.

So, I was wondering if I apply cold air (I'm planning to build a cooler) the fans would run slower (and less noisy) ?

Thanks
5  Bitcoin / Mining support / Re: Antminer S9 13.5 one board stopped hashing on: June 27, 2018, 02:58:58 PM
Presuming your running using 220V power, you likely just have a flaky hash card.  I've lost at least one hash card in 11 of my ~150 S9s, and I'm told I'm doing better than most.

Yes, I'm using a 220v line and two questions for you: Which PSU are you using? and Which pool do you recommend? Thanks
6  Bitcoin / Mining support / Antminer S9 13.5 one board stopped hashing on: June 27, 2018, 02:16:07 PM
Hi, I have searched on the forum and internet for this topic and, although it seems to be a common issue, there is no proved solution. I'm using:

- Antminer S9 13.5 Th/s
- PSU AWP3++ Power Supply
- Hardware version: 16.8.1.3
- Kernel: Linux 3.14.0-xilinx-ge8a2f71-dirty #82 SMP PREEMPT Tue May 16 19:49:53 CST 2017
- File System: Fri Nov 17 17:57:49 CST 2017 (just updated)

My issue is that after 3 or 4 hours of working one of the boards is missing from the Status table and the hashrate is 2/3 (9.3 TH/s more or less). I can confirm this "change" with the mining pool monitor (currently using Slush pool). If I reset the antminer, all boards are listed and everything seems to be ok.

In some threads people say that by changing the AWP3++ to a non-Bitmain 1600w PSU it fixes the issue. Is this true? (if so, which one do you recommend?)

Others say that by sending to warranty the board (or the entire unit) it would fix it, but some people say that the issue persists.

So, I'd like to know if someone has a solution for this or can guide me for troubleshooting this

Thanks!!!!
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