Skip to content

Bitcoin accepted at checkout  |  Ships from Laval, QC, Canada  |  Expert support since 2016

1325 Rue Bergar, Laval, QC support@d-central.tech 1-855-753-9997 Mon-Fri: 8:30 - 18:00

Quick answer

Antminer firmware holds the chips in reset and drops voltage to zero above ~75°C to protect them. Recurring overheats are almost always airflow, thermal paste, or a failing fan — not the chips.

Fix the cooling root cause; the chips are protecting themselves, not failing (yet).

Full diagnostic flow

Are all fans spinning at full, unobstructed speed?
  • A fan is slow, noisy, or stopped → A weak/dead fan starves a board of airflow and trips thermal protection. Replace it with the correct spec fan. [Fix it yourself] Error-code guide →
  • All fans run fine → Check airflow and environment: clean filters/fins, adequate intake/exhaust, ambient under ~35°C?
Check airflow and environment: clean filters/fins, adequate intake/exhaust, ambient under ~35°C?
  • Dust or hot/cramped environment → Clean the heatsinks and filters and improve airflow/ambient. Dust and recirculated hot air are the #1 cause of thermal trips. [Fix it yourself] Error-code guide →
  • Clean and well-ventilated → Is the overheating on one board/zone, or is a chip-to-chip temperature gap reported?
Is the overheating on one board/zone, or is a chip-to-chip temperature gap reported?
  • One board/zone or a big chip gap → Dried or uneven thermal paste, or a detached heatsink, on that board. Re-paste with a quality gel (e.g. Fujipoly SPG-30B) and reseat the heatsink. [DIY with care] Error-code guide →
  • Whole miner runs hot evenly → If cooling and ambient are fine, suspect a firmware profile pushing too hard, or a temp-sensor reading high. Verify the sensor and the tuning target. [DIY with care] Error-code guide →

This points at board-level damage. You can attempt it, but the realistic call for most owners is to send it to a repair bench.

Fix it yourself

Work the matching symptom decision tree and error-code guide step by step. Most cable, cooling, network and firmware faults are solvable on the bench you already own.

Send it to D-Central

Cracked solder, dead domains, shorted chips and EEPROM faults need a real repair bench. See transparent repair pricing or get a free repair quote — we diagnose and repair 38+ ASIC models in Laval, board-level, since 2016.

More tools: Kernel-Log Decoder · ASIC Fault Finder (650 codes) · All symptom trees

Related products, repair, and setup paths

Last reviewed June 12, 2026.