Most shops sell you a box and wave goodbye. We are not most shops, and we are definitely not Amazon. Since 2016 we have run an in-house ASIC repair bench in Laval, Quebec, and that bench is the reason our warranty means something. When a board comes back, it comes back to the same hands that built, tested, or refurbished it. We fix what we sell.

This page is the plain-language reference for how warranty coverage works on D-Central hardware. It complements, and does not replace, our full Return & Refund Policy, which is the binding document for any claim.

Coverage at a glance: new vs. refurbished

Two paths, depending on how the unit was sold. “Refurbished” is a tag we apply honestly to gear we have inspected, serviced, and re-tested in-house. It is not a euphemism for unknown condition.

Aspect	New hardware	Refurbished hardware
Who backs it	The manufacturer’s warranty	D-Central’s own warranty
Coverage terms	As published by the manufacturer for that model	As stated on the product listing at the time of purchase
Serviced by	Manufacturer process, which we help you navigate	Our Laval bench, directly
Dead-on-arrival window	Report within 30 days of delivery	Report within 30 days of delivery
Repaired-unit coverage	30 days on the specific repair performed
Outside warranty	Manufacturer terms apply	Used and refurbished sales are final, but our paid repair service is always open

For new gear, the manufacturer is the warrantor and we are your translator. We have spent years dealing with manufacturer RMA channels, so we can tell you what they will and will not honor before you ship anything. For refurbished gear, there is no middleman: the warranty is ours, the bench is ours, and the buck stops here.

Returns are for defects, not second thoughts

Our process is built around defective and dead-on-arrival hardware, not change-of-mind buyer’s remorse. Mining equipment is sensitive, hand-tested, and often built to order, so we do not run an open returns desk. What we do run is a fast, fair defect process.

What qualifies

• The unit arrived dead, will not power up, or will not hash as specified.
• A genuine hardware fault appears and you report it within 30 days of delivery.
• The shipment never arrived (raise a missing-item claim once 21 days have passed).

Buyer’s remorse, “I found it cheaper elsewhere,” and damage from miswiring or out-of-spec power do not qualify. We will still help you diagnose those, just not under warranty.

How to file an RMA

1. Email support@d-central.tech with your order number, the product name, a short description of the fault, and clear photos or video.
2. Wait for our approval and return instructions before shipping anything back. Unannounced returns slow everyone down.
3. We inspect the unit on the bench and decide on repair, replacement, exchange, or refund. Approved refunds go back to your original payment method, typically within 14 business days.

The full, binding details, including timeframes and exclusions, live in the Return & Refund Policy. Read it before you buy; we wrote it to be read.

The bench behind the warranty

Here is the part that no marketplace seller can copy. D-Central started in 2016, and we launched retail ASIC repair in 2017 because we got tired of watching good hardware get thrown out over a single failed chip. Since then we have repaired 2,500+ miners and built component-level repair coverage for 38+ ASIC models.

That work happens at a real bench in Laval, powered by Quebec hydro, with chip-level soldering, BGA rework, and board-level troubleshooting under one roof. It is the same discipline whether the board belongs to a customer’s S9 or a unit we are refurbishing for sale. When you send a board back under warranty, it does not vanish into a returns warehouse. It comes back to the same bench that built it.

This is why we can stand behind refurbished gear with our own name on the warranty: we are not reselling someone else’s guesswork, we are the ones who tested it. And if a unit ever ages out of coverage, the bench is still here. Our paid ASIC repair service can often save a board that the manufacturer would simply replace, which keeps more hardware running and more hash rate in the hands of independent miners instead of the landfill.

From a Bitaxe to a full hash board

The same philosophy scales down. A small open-source miner like the Bitaxe, built on the shoulders of the Open Source Miners United community and the original Bitaxe designers, is exactly the kind of solder-friendly hardware our bench loves. If yours acts up, start with the Bitaxe troubleshooting guide or browse the Bitaxe Hub before opening a ticket. Many issues are a loose connector or a config setting, not a defect, and we would rather get you hashing than process a return.

Honest bottom line

New hardware: manufacturer warranty, and we help you use it. Refurbished hardware: our warranty, our bench, our name. Returns: DOA and genuine defects, reported within 30 days. No fine-print games. If something we sold you breaks, talk to us at support@d-central.tech, and learn more about who is on the other end of that email on our About page. We fix what we sell, because we are the ones who know how.