ASIC Miner Repair Parts, PSUs and Testers

Repair parts, diagnostic fixtures and test gear for ASIC miners — hashboard testers, EEPROM and chip programmers, APW12 and APW17 power supplies, control boards, fan assemblies, replacement BM-series chips, and voltage conversion kits. A small number of listings are units and hashboards sold as-is for parts; those say so in the title and in the description.

Read this before you buy a part

Most dead miners are not dead. In our experience the failures that actually take a machine down, in rough order of how often we see them, are: a failed power supply, a fan that stopped and cooked a board, a corrupted control board, and only then genuine hashboard or chip failure. A tester pays for itself the first time it tells you the board is fine and the PSU is not.

Buy the fixture before you buy the parts. Guessing which hashboard is bad and swapping chips blind is how a repairable machine becomes scrap. A hashboard test fixture, an EEPROM tool and a working known-good PSU will diagnose almost everything on an S19-class machine.

Check compatibility by model, not by generation. Bitmain changed connectors, control boards and chips between and within series. An APW12 is not an APW17. A control board for an S19 is not a control board for an S19j Pro without the right unlock. Every listing here states the models it covers — match that list against your machine, and ask us if your exact revision is not named.

Know when to stop. A hashboard with a handful of dead chips is a repair. A board that has been through a water event, or one with visible burn damage across a voltage domain, is scrap on an S19-generation machine — the labour is worth more than the board. We will tell you honestly which one you have if you send photos.

A note on the category name

“Need Parts” is historical. The bulk of what is here is the parts and the tools themselves, not broken machines. If you want a working unit, go to used ASIC miners or new ASIC miners. If you are keeping a fleet alive, you are in the right place.

Anything marked AS-IS is sold with no claim that it works and no warranty. We do not know what is wrong with those units, we say so in the listing, and the price reflects it. Do not buy an as-is board expecting a tested one.

Full catalogue: all miners.

Diagnose before you buy the part. A universal hash board tester tells you whether a board is worth saving at all, and the BM1366 series chip tester does the same job at chip level on BM1366 boards. Once you know what has failed, a genuine Avalon 1166 Pro control board is the kind of part you order. Buying the replacement first is how people end up with two dead boards instead of one.

Most of what fails on a used miner is on this page rather than in the machine itself. Our used-miner buying guide ranks the common failures and explains which repairs are still economic at today’s hashprice.

Before you order a replacement, check what actually fits: our Antminer parts compatibility guide reads the fitment off the BHB code on the board rather than the model name on the lid, and covers APW12 against APW17 supplies, control board markings and fan current ratings.