Bitmain repair guide
Getting a faulty miner repaired
If you’re here, something has gone wrong with your machine. This guide walks you through confirming the fault, deciding whether to replace a part or send the machine to Bitmain, raising the repair ticket and booking the courier, step by step.
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3 options
- Replace the part
- In-warranty Bitmain repair
- Out-of-warranty Bitmain repair
- 1–3 weekstypical time from sending the machine to getting it back
- You paythe DHL shipping to the repair centre
- Bitmain paysthe return shipping back to you
Step 1
Confirm the fault
Before you do anything else, get the machine’s own account of what’s wrong. Bitmain will ask for it, and it tells you which part has failed.
- Log in to the machine’s dashboard by typing its IP address into a browser on the same network.
- Open the Miner Log, towards the bottom left of the dashboard.
- While the machine is in fault, scroll to the bottom of the log. The error is usually shown in the last few lines.
- Save the log. You’ll need to upload it when you raise a Bitmain repair ticket.
Step 2
Choose your repair option
Once you know the fault, you have three routes. Some parts are cheaper and quicker to replace yourself; hashboards need to go back to Bitmain.
Replace the part
Fans, power supplies and control boards are available online and are a straightforward swap. The quickest route when it’s one of these.
In-warranty Bitmain repair
Machines come with an 11–12 month Bitmain warranty. Bitmain repairs or replaces the faulty part free of charge. You pay the shipping out; Bitmain pays it back.
Out-of-warranty Bitmain repair
Same process as an in-warranty repair. The difference: once the repair centre has inspected the machine, Bitmain contacts you with a quote and invoices you before it ships the machine back.
Which route for which fault
| Fault shown in the log | Our recommendation |
|---|---|
| Fan fail | Buy a replacement fan online (Amazon or eBay) and fit it yourself. |
| PSU (power supply) fail | Buy a replacement online, or send for Bitmain repair. |
| Control board fail | Buy a replacement online, or send for Bitmain repair. |
| Hashboard fail | Bitmain repair. Hashboards can’t be fixed at home. |
Check whether you’re still in warranty
Find the serial number (SN) on the white label on the front of the machine, next to the LED indicators, and enter it at service.bitmain.com/support/warranty. It tells you whether the machine is covered and until when.
In our experience a Bitmain repair takes one to three weeks from sending the machine to getting it back. Full warranty terms are on our Warranty Policy page.
Step 3
Raise a Bitmain repair ticket
If the machine is going back to Bitmain, the ticket comes first. It gives you the repair centre address you’ll need when you book the courier.
- Create a Bitmain account at account.bitmain.com, then log in.
- Go to service.bitmain.com/repair/create and choose Create a repair ticket, then Apply for repair.
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Shipping method: choose Delivery and DHL as the courier. You won’t have a tracking number yet, so enter a temporary one made from today’s date and time, for example
202611091430. You’ll replace it later. - Add device: type Unit; item: your exact model and hashrate; device SN: the serial number from the label; quantity: how many machines.
- Faulty device: upload the miner log you saved in Step 1. In the remark, state the suspected fault, for example “faulty hashboard” or “faulty PSU”.
- Customer information: select your return delivery address.
- Repair site: we recommend UAE-DXB for UK customers. Make a note of the repair site’s recipient name, phone number, email and address shown on the ticket. You’ll need them for DHL.
- Return logistics: select DHL. Add the suspected fault again in the remark if asked, then Submit.
Step 4
Pack the machine
Packaging
- Use the original box if you still have it, ideally the one with the same serial number on the label.
- Surround the machine with foam packaging so it can’t move in the box.
- Bitmain’s own packaging advice is here.
Send the machine only
Don’t ship the power lead. Just the machine. Anything extra adds weight to pay for and is unlikely to come back.
Keep your stock fans and any noise-kit parts at home too.
Weights and dimensions for the courier
| Series | Weight | Length | Height | Width |
|---|---|---|---|---|
| S19 series (S19K Pro, S19j Pro) | 16 kg | 57 cm | 29 cm | 32 cm |
| S21 series (S21, S21 Pro, S21 Pro+, S21 XP) | 24.5 kg | 63 cm | 43 cm | 35 cm |
You’ll enter these three times on the DHL booking: the quote, the parcel details and the customs form.
Step 5
Book and ship with DHL
Start at uk.express.dhl.com. The booking has four parts; the screenshots show what to enter at each one.
Get a quote
- Destination: United Arab Emirates.
- Number of parcels: 1 per machine.
- Weight, length, height and width from the table above.
- Click Get quote, then Book a collection online.
Collection and delivery details
- Enter your own address as the collection address.
- For delivery, enter the repair site details from your Bitmain ticket: contact name, phone, email, receiver type Business, company name Bitmain Repair, and the address.
The example shown is the UAE-DXB repair centre. Always copy the details from your own ticket, as Bitmain changes them from time to time.
Parcel details
- Number of parcels: 1.
- Weight and dimensions from the table above.
- Description of contents: Computer Server followed by the model, for example
Computer Server S21 Pro 234 TH. - Your Tax ID and the receiver’s Tax ID: Not Applicable.
Customs information
- Purpose of shipment: Return for Repair.
- Item description: Computer Server and the model, as before.
- Where was the item made: Hong Kong SAR, China.
- Quantity, weight and dimensions from the table.
- Item value: £100.
- Click Continue, pick your collection date and check out.
- Print the label. Once you’ve paid, DHL emails you the shipping label. Print it out and fix it securely to the parcel before the collection, so the driver can scan it and take it away.
“Return for Repair” and the low declared value are what stop the machine being treated as a new import at the other end.
Step 6
Put the real tracking number on your ticket
Once DHL confirms the booking you’ll get a 10-digit tracking number. Go back to your Bitmain ticket, open Logistics Information, and replace the temporary number you entered in Step 3 with the real one. Without it, the repair centre can’t match your parcel to your ticket when it arrives.
Step 7
What happens next
Delivery and inspection
Bitmain emails you when the machine arrives and again when the repair is confirmed. If the machine is out of warranty, this is when you’ll receive the invoice, which must be paid before they ship it back.
Track your ticket
Follow progress in the Bitmain support portal under My repair tickets.
Contact Bitmain
Email customersupport@bitmain.com or open a customer support ticket.
Stuck at any step?
Send us the miner log and we’ll tell you what’s failed, whether it’s worth a Bitmain repair, and help with the ticket. Customers who bought from us get this as standard.
This guide reflects Bitmain’s and DHL’s processes as of November 2026 and our own experience shipping machines for repair. Bitmain’s repair sites, forms and contact details change; always follow the details shown on your own repair ticket. Repair and shipping costs are set by Bitmain and DHL, not by us. Warranty claims are handled by Bitmain directly; see our Warranty Policy.