Description
A universal Antminer test fixture that powers a hashboard on the bench and tells you which ASIC position has failed rather than leaving you to guess. Error codes come out over a serial link to a PC, which is the difference between a repair that takes twenty minutes and one that takes an afternoon. Stated coverage is T9, S9, T15, T17, S17 and S19 and other Bitcoin models.
Antminer test fixture interfaces — how it connects
| DC 12 V input | For split-type miners (T9+, S9 series) you can power the fixture here without connecting the 6-pin PSU interface |
|---|---|
| PSU 6-pin connector | Required for all-in-one miners (S11, S15, T17, S17, S19, T19) — powers the fixture and carries the 4-pin voltage adjustment line |
| Data line IO interface | Connects to the hashboard. T9+ needs an 18-pin to 24-pin adapter |
| Serial connector | To a PC over USB-to-TTL to read the test log. Wiring is green (R), black (UART), white (T) — no red connection |
| Voltage regulation line | For adjusting supply voltage during testing |
Do not connect the red wire
Worth repeating on its own because it is the mistake people make once: on the serial connection the red lead is not used. USB-to-TTL cables carry a 5 V line on red, and connecting it to a fixture that is already powered is a good way to damage something. Green, black and white only.
What a fixture does and does not tell you
A fixture identifies the failing position on the board. It does not tell you why that position failed — whether the ASIC itself is dead or the power domain feeding it has gone — and that distinction decides whether the repair is a chip swap or a hunt through the DC-DC stage. Chasing the wrong one is the single most common way an hour becomes a day. Once you have the position, a chip tester answers the second question directly for the chip families it covers.
The fixture also needs its test files, which live on a microSD card and are matched to the board you are testing — see the Antminer test fixture microSD card. Backup drivers and software are included with this fixture at no extra cost. Lifetime technical support is available as an add-on; ask us for the current terms — a previous version of this page quoted a figure that no longer matched what the store charges, so we have removed the number rather than leave a stale one on the page.
Warranty and shipping
This listing states a three-month warranty and 1–3 day shipping within the US. US shipping only. Those are the terms that apply. An earlier version of this page also carried a 6-month manufacturer’s warranty and a 7-working-day dispatch claim from a generic template, both of which contradicted the real terms above; they have been removed.
If you would rather buy the fixture as part of a complete bench, it is included in the 20-piece Antminer hashboard repair kit. Other fixtures and testers are in repair parts and tools, and if you are new to this the ASIC miner buying guide covers where repair sits in the economics.
Related hardware and where this sits in the store
Parts, fixtures and tools that go with the same repair job:
- Universal Antminer S19 T19 S17 T17 Multifunctional Test Fixture Micro SD-Card
- Bitmain Antminer S19 PRO 110Th/s Hash Board Bitcoin Miner Hashboards
- Antminer Power Supply Cable for S17 S19 T17 | APW9 APW12 Compatible
Category: Need Parts. Or browse the full ASIC miner inventory.



