- Watch trends, not only hard failures.
- Inspect airflow and power connectors on a schedule.
- Stock common parts according to fleet size and lead time.
Daily checks should be fast and repeatable
Daily maintenance is mostly about spotting change: falling hashrate, rising intake temperature, unusual fan speed, repeated restarts or a growing rejected-share rate. A dashboard that highlights exceptions is more useful than manually opening every miner.
Keep thresholds consistent so the team knows which alerts require immediate action and which can wait for a maintenance window.
Inspect airflow and electrical connections
Dust buildup and blocked intakes reduce cooling. Loose or heat-damaged power connectors can create serious reliability and safety issues. Periodic visual inspection should therefore include cables, plugs, PDUs, fans and rack cleanliness.
Any connector showing discoloration, deformation or repeated heating deserves investigation before the miner is returned to service.
Use maintenance windows for deeper work
Scheduled downtime is a good time to clean equipment using appropriate methods, update approved firmware, check sensor behavior and rotate spare fans or PSUs into tested inventory.
Keep records of which components were replaced. Patterns across a model or rack can reveal environmental or electrical problems.
Build a small spare-parts strategy
Common failure items such as fans and power supplies can create outsized downtime if replacements must be shipped after the failure. Stock levels should reflect fleet size and lead time rather than guesswork.
For board-level repair, decide whether work will be done in-house or sent to a specialist, and define when a machine is no longer economical to repair.
Bottom line
A simple maintenance routine for fans, connectors, hashboards, dust, firmware and spare parts. Use the principles above as a repeatable operating framework, then validate decisions with current power pricing, network conditions, equipment data and local electrical requirements.