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BM1485 Tin Fixture Tool Kit – Antminer L3 / L3+ / L3++
When to Replace the CK5 / CK6 Control Board
CB2 V8 H3 Controller Architecture & 6-Pin Fan Connector
Stocked in volume for repair shops servicing K7 fleets and individual miners replacing failed chips at the bench
The APW121417b includes overcurrent protection (260–340A)
Whatsminer P221B PSU Power Supply for Whatsminer M31s v51 BM1485 Tin Fixture Tool KitWhatsminer P221B PSU 3300W Genuine Replacement Power Supply for Whatsminer M31s The Whatsminer P221B GB 12 3300 B V01 power supply is the dedicated replacement PSU for the Whatsminer M31s miner. 220 240VAC input, 12V 265A main rail for the hashboards plus a 12V 15A auxiliary rail for the control board. When the original PSU fails, swapping in a fresh P221B is faster than troubleshooting the failed unit board level back to hashing within minutes.
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