BM1366 ASIC Chip Tester - Pass/Fail for S19 XP Silicon

Description

A BM1366 chip tester: a socketed bench fixture that gives you a straight PASS or ERROR on a single Bitmain BM1366-series ASIC. It covers the BM1366AL, BM1366AG, BM1366BS, BM1366BP and BM1366AH variants — the chips used on Antminer S19 XP, S19 XP Hydro and S19k Pro hashboards. The unit has an OLED readout labelled BM1366, a 40 mm cooling fan for the socket, a reset button and a DC 5 V input.

BM1366 chip tester — what it covers

Chips covered	BM1366AL, BM1366AG, BM1366BS, BM1366BP and BM1366AH
Boards those chips are on	Antminer S19 XP, S19 XP Hydro and S19k Pro hashboards
Does not cover	BM1368AA, the S21 / T21 generation chip — a different part despite the one-digit gap in the number. Check the chip marking on your board before ordering
What it reports	PASS or ERROR. A functional go/no-go and nothing more — it is not a binning tool and will not tell you a chip’s efficiency or its voltage behaviour
Readout	OLED, labelled BM1366
Socket cooling	40 mm fan
Power input	DC 5 V. Vendors specify an adjustable supply set to 5 V with plenty of current headroom — an ordinary small wall wart is not the right feed
Getting the chip off	Bottom heat, hot plate at around 300 °C, then into the socket with pin 1 aligned. Observe normal ESD precautions; you are handling bare BGAs
Condition and warranty	Not stated in this listing, so nothing here claims either. Ask before you buy and we will tell you what we actually have — new sealed, opened, bench-tested or untested — and put any coverage in writing

The two moments a BM1366 chip tester pays for itself

One: you are stuck on the same fault. You have found the domain, reworked it, powered up, and the board reports the same failure. At that point the question is no longer where is the fault, it is is this chip actually dead — and you cannot answer that in circuit. Pull it, socket it, press test. A definite answer ends the loop instead of committing you to another hour of rework on a hypothesis.

Two, and this is the bigger one: you have just bought chips. BM1366s are sold loose in trays as new stock and as tested pulls, and the quality is genuinely variable no matter what the seller says. An S19 XP hashboard carries around 110 of them. Soldering an unknown-quality chip onto a board is how a straightforward repair turns into a second repair — and if you are working through a tray, testing them first tells you your yield before you have committed any labour. That is also the leverage you need to go back to whoever sold you the tray while the claim window is still open.

How it is used, and what it needs

The chip comes off the board with bottom heat — a hot plate, around 300 °C — then goes into the socket with pin 1 aligned, and the test button starts the run. Power is 5 V DC; vendors specify an adjustable supply set to 5 V with plenty of current headroom, so an ordinary small wall wart is not the right feed. Observe normal ESD precautions; you are handling bare BGAs.

What it does not tell you

PASS / ERROR is a functional go/no-go and nothing more. It is not a binning tool. It will not tell you a chip’s efficiency, its voltage behaviour, or whether it will still be good after 18 months in a hot shed — so a tray that tests 100% PASS is a tray of chips that work, not a tray of well-binned chips. Treat it as the floor, not the ceiling.

Fitment — the mistake we would rather you did not make

This fixture is BM1366 only. The BM1368AA used on the S21 and T21 generation is a different chip and this tester does not cover it, despite the one-digit gap in the part number. Check the chip marking on your board before ordering. The natural companions here are as-is boards to work on — we generally have an S19 XP Pro hashboard sold as-is and a tested-working S19 Pro hashboard — plus a board-level fixture such as the K3L tester to find the bad domain in the first place, and the full hashboard repair tool kit for the rework itself. All of it lives in repair parts and tools.

Condition and warranty

This listing does not state a condition grade or a warranty term, so we are not going to imply one. Before you buy, ask us and we will tell you what we actually have — new sealed, opened, bench-tested, or untested — and put any coverage in writing. Ask us about this unit.

What’s in the box

1 × BM1366 Series ASIC Chip Tester BM1366AI AG BP BS Bitcoin
Nothing that is not listed above. Cords, controllers, brackets and spares are only included when this listing names them — if you need to know before you pay, ask on +1 (781) 577-0377 or ns@ingmining.com and we will confirm in writing what is physically in the crate

Questions buyers ask about this part

Is this a complete, working machine?

No. This listing is on the parts and repair shelf, which holds both brand-new spares and bench tools and as-is units sold for repair. Which of those this one is, is stated in the description above — read it before you order, and ask us on +1 (781) 577-0377 or ns@ingmining.com if anything about compatibility with your fleet is unclear. We would rather answer the question than take a return.

What should I check the day it arrives?

Photograph the pallet or box before you open it, keep the packaging, and run the 48-hour acceptance test straight away. Freight claim windows are short, and a fault found on day two is a conversation while a fault found on day thirty is an argument. Our own six-step bench procedure is published in full, so you can repeat exactly what we did.

Shipping cost for this exact item, and how warranty and returns work here, are answered in the Shipping & buying tab on this page. Anything else, ask a person on +1 (781) 577-0377 or ns@ingmining.com — we would rather talk before you buy.

Related hardware and where this sits in the store

Parts, fixtures and tools that go with the same repair job:

Category: Need Parts.

This tester covers the BM1366 generation and deliberately not the BM1398 or BM1368 boards sitting next to it in the numbering. The parts compatibility guide maps chip families to machines so you buy against the right one.

Where this listing sits

This one is on the parts and repair shelf. That shelf holds two different things: brand-new spares and bench tools, and as-is units sold for repair. Which of the two this listing is, is stated in its own description — read it before you order.

What our grades mean

These are the only words we use, and each one means a specific thing. They are not interchangeable and we do not soften them to move stock.

New	Unused stock. Factory sealed unless the listing says otherwise — “new, open box” means exactly that, and the listing will say it.
Tested working	Second-hand, and it ran on our bench at the hashrate the listing states. We measured it; we are not repeating what the last owner told us. Expect cosmetic wear.
Refurbished	Tested working, plus work done: cleaned, thermal paste and fans dealt with, failed components replaced. The listing says what was actually done to that unit rather than using the word as decoration.
As-is / for parts	Sold with no working claim at all, at a price that reflects it. Buy these to repair or to harvest. If a listing says as-is, assume it does not hash until you have proved otherwise.
Untested	We have it, we have not powered it, and we are not going to pretend we did. Rarer than as-is and always stated explicitly.

What a grade here does not mean

Cosmetic wear is not a fault. Dust, scratches, scuffed labels and discoloured plastics are normal on hardware that has been earning. We photograph what we have; if the pictures matter to you, ask for more and we will take them.
A grade is not a warranty. Warranty terms are stated per listing, never per store — see the Shipping & buying tab. A tested-working grade describes what the machine did on our bench, not what we owe you in six months.
A boosted hashrate is not a spec. Where a unit ships on tuned firmware we say so and we give the factory figures too, because overclocking raises power faster than it raises hashrate — a tuned machine is less efficient per terahash than stock, not more.
We will not invent a grade to fill a field. If a unit came in without history and has not been through the bench, its listing says that.

How the grade gets decided

A used-hardware seller who will not tell you how they test is asking you to take the grade on trust. Ours is published: the six-step bench procedure every machine goes through, and the five measurements that get recorded — per-board hashrate, chip count, measured wall power rather than the nameplate figure, hardware error rate, and temperature under sustained load. When it reaches you, run the 48-hour acceptance test straight away, while the freight claim window is still open.

Buying second-hand for the first time? How to buy a used ASIC miner without getting burned is the long version, written from the repair bench rather than from a spec sheet.

Shipping

Shipping this item inside the United States costs $49.99 by UPS Ground — that is the rate the checkout will charge, read from the store’s own shipping settings, not an estimate. Orders ship within 7 business days.

Outside the United States the checkout quotes a flat international rate. On multi-unit or pallet orders, contact us before ordering so freight to your destination can be confirmed properly. What to check when the pallet arrives, and how a freight claim works, is covered in the mining hardware shipping guide.

What to do the day it arrives

Photograph the pallet or the box before you open it, and keep the packaging until you are satisfied. Freight claim windows are short, and damage found on day two is a conversation while damage found on day thirty is an argument.

Then run the 48-hour acceptance test straight away, while that window is still open. It is the same ground our own bench covers, so you can compare like for like: how the grade on this listing was arrived at, and the five measurements we record, are set out in the Condition & grading tab on this page.

Condition, warranty and returns

Condition: Repair part or bench tool — this shelf holds both new spares and as-is units, so read the condition stated in the description.

Warranty is stated per listing, not across the catalogue. Some units carry a manufacturer term and say so above, naming the term and the date it runs from. Many units, particularly used and AS-IS stock, carry none, and those listings do not claim one. There is no blanket warranty covering a catalogue that runs from sealed factory stock to a hashboard sold for parts. For what a mining warranty normally covers, see ASIC miner warranty explained.

Returns: ask for the terms on this unit before you pay. No single returns window is published for the whole store, because the sensible terms on a tested working machine and on a board sold AS-IS for parts are not the same terms. Email or call and ask what applies to this exact item — it is a two-minute conversation and a great deal cheaper than a dispute.

Who you are buying from

ING Mining LLC, Hanson, Massachusetts. ING MINING® is a registered U.S. trademark; our marketplace feedback is on the reviews page and the longer version of who we are is on about. Reach a person on +1 (781) 577-0377 or ns@ingmining.com.

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BM1366 Series ASIC Chip Tester BM1366AI AG BP BS Bitcoin Miner Repair Tool

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Description

BM1366 chip tester — what it covers