The Bitmain Antminer S9 Series Miner is Unstable

In this article, we discuss a few unusual behaviors of the Bitmain Antminer S9 series and provide the causes and fixes.

Abnormal Performance

1. The Bitmain Antminer S9 series miner restarts automatically
2. The hashrate is unstable

Reasons and Solutions of Bitmain Antminer S9 Series Miner is Unstable

1. As an electronic device, the Bitmain Antminer S9 series miner is susceptible to electromagnetic interference. The miner can restart if the control signal is interrupted. The chip or hash board may change when it is interfered with. Most of the time, it can be fixed after restarting and prevented by grounding and shielding.
2. The electricity supply varies. The Bitmain Antminer S9 series miner can produce 200 to 300 A of power while it is running, and the miner with liquid cooling can produce even more power. When the power output varies significantly, it is challenging to predict when the hash board will restart. Typically, the power supply can be changed.
3. Voltage levels are low or unstable. To check for this problem, you’ll need specialized equipment or an experienced electrician.
4. On the control board, there is damage. The control board is the main element of the miner, which is similar to a microcomputer. In the flash memory are the firmware programs kept. When something is wrong, the control board will restart the miner. Usually, factory settings can be recovered.
5. Usually, the unstable chip can be located by searching the log. If the chip is unstable or missing, it is possible to send the device straight back to the factory for repair.
6. Because of how unstable the network is right now, it’s possible that the Bitmain Antminer S9 series miner will restart. Generally speaking, if you want to perform a local inspection, try switching the network cable or port.

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