This guide will address the issue where the Bitmain Antminer S9 Series miner’s hash rate is ZERO but can be recovered by restarting.
Issue: after running for a period of time, the Bitmain Antminer S9 Series miner’s hashrate shows “0”. Rebooting can assist in restoring the hashrate, though.
Possible causes and solutions:
1. High-temperature protection
Verify that the Bitmain Antminer S9 Series miner’s temperature is within a normal range by checking it. Read more from this article:
Bitmain Antminer S9 Series Normal Operating Temperature Range
2. PSU might have issue
If the miner status shows all chips “x”, test by replacing with a good known PSU. In the interim, make sure the power input voltage ranges from 210V to 240V.
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