<p>I had this problem. First 1 board went down. Then a second board. I read that low temperatures (5 degrees Celsius or lower) will make the miner act this way. Unplug all power supply cords from the miner. Let the miner get back to a more reasonable room temperature. All my boards came back and showed under miner status.</p>

CC BY-SA 4.0
2021-11-26T20:51:22.937Z
2021-12-07T14:49:15.057Z
2021-12-07T14:49:15.057Z
Matthew Odom
<p>Is there a possibility one of your power-supplies have gone bad? You can further debug this by obtaining the "Kernel log" found on the "System" tab. I would also try re-seating the cables, and test each hashboard individually (power them one at a time to determine if they are still OK -- <em>make sure to shutdown/unplug your miner before performing any work</em>!)</p>

<p>If you can provide that file, more information should be available.</p>

CC BY-SA 4.0
2018-07-11T15:36:51.303Z
2018-07-11T15:36:51.303Z
Mason Ticehurst
<p>I just hooked up my miner after returning from training. when i first hooked it up all 3 chains were visible but then i moved the miner to a more permanent location and hooked it back up. now only one chain is appearing. i thought it might have been an issue with the 110 outlets, so i unhooked one hash board so only one board is hooked up to my PS (i use 2, one for one board and the miner, the other for 2 boards). Even after doing this only one chain is appearing.</p>
<p><a href="https://i.sstatic.net/3hFDC.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/3hFDC.png" alt="enter image description here" /></a></p>

CC BY-SA 4.0
2018-07-11T03:16:07.277Z
I don't understand why you would be expecting to see more than one chain. The whole point of the blockchain is to achieve decentralized consensus on a single longest chain that is to be treated as the ground-truth. -- Am I missing some context from the mining lingo where chain is something else than elsewhere in Bitcoin?
Murch
<asic><error><antminer>
Only one chain is appearing in Miner Status on Antminer S9
Kurtis
# Only one chain is appearing in Miner Status on Antminer S9

(Asked by: username_0 on 2018-07-10)

I just hooked up my miner after returning from training. when i first hooked it up all 3 chains were visible but then i moved the miner to a more permanent location and hooked it back up. now only one chain is appearing. i thought it might have been an issue with the 110 outlets, so i unhooked one hash board so only one board is hooked up to my PS (i use 2, one for one board and the miner, the other for 2 boards). Even after doing this only one chain is appearing.

[![enter image description here](https://i.sstatic.net/3hFDC.png)](https://i.sstatic.net/3hFDC.png)

**Tags:** asic, error, antminer

> **Comments:**
> **username_1**: I don't understand why you would be expecting to see more than one chain. The whole point of the blockchain is to achieve decentralized consensus on a single longest chain that is to be treated as the ground-truth. -- Am I missing some context from the mining lingo where chain is something else than elsewhere in Bitcoin?  

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## 2 answers

### Answer by username_2 on 2021-11-26. Score: 0

I had this problem. First 1 board went down. Then a second board. I read that low temperatures (5 degrees Celsius or lower) will make the miner act this way. Unplug all power supply cords from the miner. Let the miner get back to a more reasonable room temperature. All my boards came back and showed under miner status.


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### Answer by username_3 on 2018-07-11. Score: 0

Is there a possibility one of your power-supplies have gone bad? You can further debug this by obtaining the "Kernel log" found on the "System" tab. I would also try re-seating the cables, and test each hashboard individually (power them one at a time to determine if they are still OK -- *make sure to shutdown/unplug your miner before performing any work*!)

If you can provide that file, more information should be available.


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