Antminer Repair
Avalon Nano 3 Repair Service
Avalon Nano 3 Repair Service
By placing your order you agree to our Terms of Service, Warranty Terms and Refund Policy.
Drop off available in Fort Lauderdale, FL (2141 NE 51st Ct).
Repair guide last verified:
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Avalon Nano 3 miner repair in the USA for compact home miners that reboot, overheat, or randomly drop off the pool. We troubleshoot the unit at the board level and validate stability under real mining load so it runs continuously, not just “boots and looks green.”
Quick Symptom Checklist
- Random reboots / reset loops under load
- Unstable hashrate or sudden drops to zero
- Hardware compute errors such as
invalid nonce - HW error - Pool/Stratum drops that repeat under heat or load (e.g.,
Cannot match to any stratum! (0x8C3)) - Overheating symptoms: hot case, fans at max, throttling behavior
- Sensor behavior that looks wrong: temperature jumps, freezes, or unrealistic values
Model-Specific Patterns We See on Avalon Nano 3
-
Thermal runaway pattern: temps climb → hashrate becomes unstable → disconnects from pool → reboot. Logs often show short uptimes after restart (e.g.,
linux system uptime:5). -
“Network-looking” failures that are actually load/heat: stratum errors (like
Cannot match to any stratum! (0x8C3)) appear repeatedly when the unit is hot or power is marginal. -
HW error amplification: once the thermal interface degrades,
invalid nonce - HW errorfrequency rises and the miner stops sustaining stable hashing. - Small-fan degradation: airflow drops long before the fan fully dies, so the miner “looks alive” but cannot hold temperature under continuous mining.
Hardware Notes
- Unit type: compact home miner with a single internal hashboard (you may also see “hash board” used as a synonym)
- Chips per board: 10 ASIC chips
- ASIC marking: A3198MC
- Power: 28V DC input via external power supply
- Interface: OLED screen + control buttons (including reset)
Diagnostics Focus
- Thermal path: thermal paste/pads condition, heatsink contact quality, and signs of heat stress
- Cooling performance: fan health, airflow direction, dust blocking heatsink fins
- Power stability: verifying stable voltage delivery under real load, not just idle boot
- ASIC chain stability: signal integrity across the chip chain and intermittent faults that appear only when hot
- Sensors/control logic: temperature sensing behavior and protection logic triggering reboots
Gotchas
- Dried thermal paste: a top cause of reboot loops and increasing HW errors on Nano 3.
- Hidden dust load: the outside can look clean while the heatsink fins inside are already choked.
- Small fans fail “quietly”: reduced airflow causes instability before the fan fully stops.
Typical Service Scenario
- Runs 24/7 as a small “heater-style” miner in a warm room with limited fresh airflow
- Dust buildup over time with no deep cleaning, while the miner still appears “green” in the UI
- Thermal interface dries out after long continuous operation, causing heat spikes and reboot cycles
What Happens After Intake
- Diagnostics: board-level troubleshooting to isolate thermal, power, signal, cooling, or sensor faults
- Approval: we confirm findings and repair scope with you before proceeding
- Repair: cooling restoration and targeted component-level fixes where needed
- Validation: stability checks on diagnostic tooling, then a real mining load test
- Run test: minimum 1 hour continuous mining to confirm stable hashrate and normal temperatures
- Ship-out: once it holds steady under load, it’s ready to go back to you
Diagnostics & Validation Equipment
We use professional ASIC diagnostic tooling and confirm results under real mining load. The goal is stability you can verify, not a “looks fine” screenshot.
Contact our repair team today and get your miner back to full power.
Technical FAQ
Q: Why does my Avalon Nano 3 keep rebooting every few minutes?
Q: What does “invalid nonce - HW error” mean on Nano 3?
Q: I see “Cannot match to any stratum! (0x8C3)” - is it always a pool issue?
Q: Is Avalon Nano 3 repair complicated?
Q: Can I fix overheating myself?
- 5 stars: 20 (100%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 star: 0 (0%)
Great communication. Quick repair and return. Highly recommend. Trusted repair company.
Hi Jon, thank you for your kind words! We're glad you're satisfied with our service!!!
Super fast and precise service! Unit arrived back only several days after I shipped it to them. Visually there is no sign of any repair, unit looks like new, no flux, solder or any repairs residue. Most importantly, it works like a charm. These folks know their business and I'll use them again if necessary. Very satisfied!!!
Thank you, Charles! We really appreciate your feedback. It was a pleasure repairing your NerdQCTAXE Gamma 12Th. We take pride in returning every miner looking as clean as it did before the repair, with reliable, long-lasting results. We're glad it's back to mining, and we'll be here whenever you need us again. Happy mining!
Thank you, Rome! We appreciate the review and we’re glad your Bitaxe Hex 6TH solo miner is working perfectly again. Thanks for including the photo too.
Awesome experience, the miners are working perfect. Their dedication and hard work make a significant difference in our project. It's always inspiring to see such commitment and teamwork in action.
I have only good things to say Alex did for me what Canaan Avalon would not do, and that is to repair their product. God abundantly bless this company
Got me back up and running faster than I could track the package. Whatever wizardry is going on down there, it got my NerdAxe Gamma restored from a Guru error literally like a space mission depended upon it. Thank you and wish me luck!
amazing work! i had sent in a nerdqaxe which was repaired right away and my bitaxe got fried because i'm an idiot so shipped that out in the same box I had previously used and got it back right away. I know it's intimidating sending in USPS, I'm in CA and repair is in FL but the turn times are the fastest around and it comes back like new. Amazing! 5/5 recommend.
Thank you, Emmett, for your kind words and continued trust in our services.
Super fast turn around and excellent work! Device was thoroughly cleaned too!
Hi Emmett, we're thrilled to hear you had a great experience with our repair service! Thanks for the kind words and for trusting us with your device.
great job
Thank you, David! Glad you’re happy with our service.
Awesome service
Hi there! We're thrilled to hear you had an awesome experience with our service. Thanks for your kind words!
Quick, personal service with detailed info provided to help ensure quality repairs.
Hi Zachary, thank you for your kind words! We're thrilled to hear you appreciated our quick and personal service. Looking forward to assisting you again!
My miner had an issue with a failure to start, screen would not turn on and the PSU would blink a dim blue light once.
Reached out to them and Alex was very responsive to my questions within less than a day with my initial question (website said they fixed the 12TH model and was i wondering if they also fixed the 9TH and they do) along with a couple more questions on how I should package it (those were answered within a couple hours a piece during business hours) and mailed it out the next day.
I liked that unlike other websites I can send in the full rig without having to take it all the way apart (like taking off the fans, heat sink, removing from the stand etc.)
Only minor critique (that is not worth taking any stars from) is I wish the shipping options were explained a tad better since I chose the wrong one but he refunded the difference quickly and I did not have to ask for it since they noticed.
It got to them on 6-10 and they mailed it back on 6-12 so it was a 2 day turn around time to get it fixed when I got it back and it started right up and runs cooler than when I first got it.
Would i recommend them again? Yes
Thank you, Daniel! We really appreciate the detailed review and the trust you placed in us with your NerdOCTAXE Gamma repair. We’re glad the miner started right up, is running cooler, and that the full-rig send-in option made the process easier. You’re also right about the shipping options, we’ll work on making those clearer so future customers don’t have to guess. Thanks again for the honest feedback and recommendation.
Fast repair and quick shipment back! Would definitely use again.
Thank you, Wayne! We’re glad your NerdOCTAXE Gamma 12Th repair was completed quickly and made it back to you fast. We appreciate the feedback and would be happy to help again.
SoloMinersUSA had told me about Antminer Repair, so I thought of course I’ll give them a try. And let me tell you, I was not disappointed. Turn around was quick, communication was top notch and my NerdQaxe++ was brought back to life even after I attempted the repair myself. 10 out of 10! Will most definitely use Antminer Repair again…
Thank you, Jon! We really appreciate the feedback and we’re glad your NerdQaxe++ is back online. Solo miner boards can be tricky after a failed DIY repair, so it’s great to hear the unit is running properly again.
Thank you, the miners runs perfectly thank you guys for doing a phenomenal job.
No problems repairing and quick turnaround. Would use again.
I would highly recommend Antminer Repair! They did a great job communicating the progress on repairing my Bitaxe miner. It's mining as I type this review.
Very fast service great customer service fast turnaround. Im enjoying my bitaxe gamma 601 with the geekpi low profile cooler and noctua fan that needed a new pub board. They put it together and it shows no errors on the hashrate. Great job
Recommend!