Warranty or Repair? Antminer RMA vs Independent Repair Decision Tool

Quick answer

Whether to RMA a broken Antminer or pay for an independent repair comes down to four things: is it still inside Bitmain's warranty (new units are typically 360 days from shipment, 180 days for S17-and-earlier), was it bought new from an authorized seller, has anyone opened it (that voids the warranty), and is the fault a covered defect (fans and physical/liquid damage are never covered). If all four line up, a Bitmain RMA is usually cheapest because the repair is free — but budget weeks of downtime and cross-border shipping. Otherwise, an independent board repair (D-Central flat tiers: $95 / $145 / $195 CAD) is the faster, cheaper route; and once repair cost passes roughly 60% of the machine's used value, it is usually not worth fixing.

Use the decision tool below for your exact model, age, and symptom — it gives one of three verdicts: RMA, independent repair, or not worth repairing.

Verdict

Out of warranty, but worth repairing — board repair beats replacing it

There is no live Bitmain warranty to claim (out of term, or a used unit whose warranty does not transfer), so the decision is purely economic: repair cost vs the machine's value. For the Antminer S19j Pro / S19j Pro+ — roughly C$450–C$1,100 used — a board repair at about C$165 for 1 affected board is well under half the replacement cost, so fixing it is the rational call. Most faults fall into our flat tiers (Level 1 $95 / Level 2 $145 / Level 3 $195 CAD); we confirm the exact figure after a free diagnosis.

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Resale ranges are rough public-marketplace figures (CAD, June 2026) used only to weigh repair against replacement — not quotes. Final repair price is set after a free diagnosis. Always confirm your model's exact warranty term with Bitmain.

What Bitmain's warranty actually covers

The numbers above come from Bitmain's published Product Warranty policy (support.bitmain.com, as published and accessed June 2026 — always verify your model's current terms there). In summary:

Term. New BTC miners and new power supplies generally carry a 365-day warranty calculated from the official sales shipment date (subject to the sales contract). The Antminer 19 series warranty was extended from 6 months to 12 months.
Older generations (S17 and earlier) shipped under the historic 180-day term.
Fans are not covered. Neither is accidental, physical, liquid, or power-surge damage, or damage from running outside spec.
Opening or repairing the unit yourself voids the warranty on the entire machine, not just the part you touched.
Warranty service is by RMA to a regional repair centre. You generally pay inbound shipping and any cross-border duties; expect weeks of turnaround.
Used units rarely carry a valid, transferable Bitmain warranty — assume out-of-warranty unless you hold the original authorized invoice and it is in term.

Whatsminer (MicroBT) and Avalon (Canaan) publish their own broadly similar OEM policies (time-limited from shipment, fans/accidental damage excluded, RMA to a service centre). Check the manufacturer's own warranty page for the exact term.

The decision at a glance

Your situation	Verdict	Why
In warranty, new from an authorized seller, never opened, covered defect	Bitmain RMA	The repair is free under warranty; you only pay shipping and downtime.
Near end of warranty and downtime is expensive for you	Compare RMA vs fast repair	A free RMA can still lose to a same-week independent repair once lost revenue is counted.
Fan error / seized fan	Cheap independent fix or DIY	Bitmain excludes fans from warranty — a $5 fan or a $95 Level 1 service beats weeks of RMA.
Unit was opened or previously repaired	Independent repair	Opening it voids the Bitmain warranty on the whole machine — RMA is off the table.
Used / second-hand unit, genuine board fault	Independent repair (if value supports it)	No transferable warranty; fix it if repair is well under the machine's used value.
Out of warranty, modern miner, 1 bad board	Independent repair	A $145–$195 board repair is a fraction of replacement cost.
Physical / liquid / surge damage, or repair > ~60% of used value	Usually not worth repairing	Never a warranty case; harvest good boards/PSU for spares or recycle.
Legacy gen (S9, S17) with a dead board	Usually not worth repairing	Repair often exceeds resale value at today's difficulty — keep only as a heater/learning unit.

The hidden cost of a "free" RMA

A warranty repair is free in parts and labour — but not free overall, and that is where the real decision lives:

Shipping and duties. You pay to crate and ship a heavy unit to a regional repair centre, and from Canada that can mean cross-border freight plus customs handling each way.
Downtime. RMA turnaround is commonly measured in weeks. Every day offline is mining revenue you do not earn — for a profitable modern miner that lost revenue can rival the cost of just paying for a fast repair.
All-or-nothing rules. Open the lid to diagnose it yourself and you forfeit the claim. If you are not certain the fault is covered, you risk shipping it twice.

That is the whole point of this tool: a free RMA wins when the warranty is solidly valid and the fault is clearly covered; a paid independent repair wins when the warranty is gone, voided, or the downtime math flips. When neither pays, we will tell you to keep the unit as a heater or harvest it for spares rather than sell you a repair you should not buy.

Frequently asked questions

How long is the Antminer warranty?

Bitmain's published policy gives new BTC miners and new power supplies a warranty of roughly 365 days calculated from the official sales shipment date (the Antminer 19 series was extended from 6 to 12 months). Models from the S17 generation and earlier shipped under a 180-day term. Always confirm the exact term for your model and invoice on Bitmain's warranty page, because it is subject to the sales contract.

Does opening my Antminer void the warranty?

Yes. Bitmain treats any unauthorized opening or repair as voiding the warranty on the entire unit — not just the component you touched. If your miner is still in warranty and the fault is covered, do not open it; ship it for an RMA. If it has already been opened, the warranty is gone and an independent board repair is the sensible route.

Are fans covered under the Antminer warranty?

No. Bitmain explicitly excludes fans from warranty coverage. A fan error is also the cheapest fault in mining to fix — a standard 12 V replacement fan and a few minutes, or a Level 1 bench service from $95 CAD. Do not RMA a fan fault; you would trade a few dollars of parts for weeks of downtime.

When is it not worth repairing an ASIC miner?

When the estimated repair cost climbs past roughly 60% of the machine's used resale value — common on older generations (S9, S17) and on units with physical or liquid damage across multiple boards. At that point harvesting the good hashboards, PSU and fans as spares, or recycling responsibly, beats pouring money in. The exception is if you want the unit purely as a space heater or a learning platform.

Can I repair an Antminer instead of using the warranty?

Yes, and often it is the better call. If the unit is out of warranty, used, already opened, or the fault is not covered (fans, physical damage), an independent board-level repair avoids the RMA's shipping and weeks of downtime. D-Central publishes flat repair tiers — Level 1 from $95, Level 2 from $145, Level 3 (chip-level) from $195 CAD — with the final price set after a free diagnosis.

Keep going: Repair pricing tiers (CAD) · Repair cost estimator · ASIC Fault Finder · ASIC Reliability Index · Profitability Leaderboard · Request a free repair quote

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Last reviewed June 12, 2026.