Chip-level ASIC miner repair, on your site
Frontline Hash repairs hashboards and power supplies directly at your mining farm, so units don't leave the floor. Antminer Z15, Z15 Pro and Z11, S21 Pro / S21+ / S21 XP and L9, plus APW power supplies and altcoin miners, across the USA.
Top-rated on public marketplaces and mining forums · No lock-in contracts · Itemized quote before any repair
- 5
- senior repair technicians
- 8+
- units repaired per technician per day
- 1–3 days
- typical single-miner turnaround
- 1–2 weeks
- typical small-batch turnaround
What customers say
Verified feedback from customers across public marketplaces and mining communities.
“They explained exactly what failed and fixed it within 3 days.”
“Fast turnaround on my APW17. Saved me hundreds compared to buying a new unit. Highly recommend.”
“Best service out there. Doesn’t overcharge for repairs unlike other services. Definitely will be using again.”
“Very good seller. Honest, he addressed the issue and fixed it fast. Highly recommended. Thank You.”
“The only shop I trust with S21 power supplies. They know the complex circuitry inside these new units.”
“Good communication, service, and expedited fixing and shipping.”
Built for mining operations that can't wait
From a single dead hashboard to a full fleet overhaul, the work is done where your miners are, documented unit by unit, and priced per repair.
On-site repair crews
Technicians travel to your farm with chip-level diagnostic and rework equipment. Miners are repaired on location instead of being packed and shipped.
No shipping risk
No freight damage, no cross-state shipping costs and no units in transit. Your team stays in control of the fleet throughout the repair.
Every repair logged
Each unit is tracked in our ticketing portal: diagnosis, parts replaced and test results, with a repair report at the end.
Per-unit pricing
You pay for completed repairs only. No retainers or minimum commitments, so the service scales with what your fleet actually needs.
How a repair works
Start a repair requestStep 1
Submit a request
Send your fleet size, miner models and location. We confirm availability and schedule within one business day.
Step 2
Diagnosis
Each unit gets a hashboard inspection, power-rail testing and fault isolation, followed by an itemized quote.
Step 3
Chip-level repair
Failed chips, MOSFETs and capacitors are replaced on professional rework stations, then every board is burn-in tested.
Step 4
Back online
Units go back on the rack with a repair report, warranty, and follow-up support through the ticket portal.
Supported models
Chip-level repair for Antminer, Whatsminer, Avalon and leading altcoin ASIC miners, on-site or by mail-in.
Zcash Miners
EquihashCore SpecialtyZcash · Equihash · ASIC BM1746
Antminer Z15 / Z15J
The Z15 and Z15J hashboards are built around the BM1746 ASIC chip operating under demanding Equihash workloads. Our technicians perform precision MOSFET replacement on the power delivery rails, core-voltage short-circuit diagnosis using thermal imaging, and professional reflow/reballing of failed Black Rhino chips. Each repaired board goes through full hashrate burn-in testing before return.
- BM1746 chip replacement
- Core voltage short-circuit diagnosis
- MOSFET replacement on power rails
- Thermal management & paste refresh
- 24-hour burn-in stability test
Zcash · Equihash · Higher hashrate · runs hot
Antminer Z15 Pro
The newer Z15 Pro pushes more hashrate and runs noticeably hotter than the original Z15, so heat drives most of its failures. We fix the four issues Z15 Pro owners see most: overheating and thermal throttling, "Temp NG" / 0°C temperature-sensor errors, hashrate drop from dropped-out chips, and "cannot find hashboard" faults caused by a broken serial chain or dead core-voltage rail — all repaired at the chip level with genuine parts.
- Thermal interface refresh & cooling repair
- Temperature-sensor fault repair
- Hashrate-drop / missing-chip recovery
- Board-not-detected chain repair
- 24-hour full-load burn-in test
Zcash · Equihash · 3× BM1744 · 12nm
Antminer Z11
The Z11 is an older Equihash miner with three BM1744 ASIC chips wired in a serial chain per hashboard, so a single dead chip or cracked solder joint drops the whole board to 0 hashrate. We revive aging Z11 boards — tracing broken chains, clearing core-voltage shorts, repairing worn power components, and replacing failed chips with genuine parts — a cost-effective way to keep older fleets earning instead of scrapping them.
- BM1744 chip replacement
- 0-hashrate / broken serial-chain repair
- Core voltage short-circuit fix
- Aging solder & power-component repair
- 24-hour burn-in stability test
Also repaired: Innosilicon A9 Request a quote
Bitcoin Miners
SHA-256Bitcoin · SHA-256 · BM1370 / BM1368
Antminer S21 Pro / S21+ / S21 XP
The S21 Pro, S21+ and S21 XP make up the largest installed base of current-generation Bitcoin miners. They run on Bitmain's 4nm BM1370 / BM1368 ASIC chips and are known for high power density, which demands precision thermal management to sustain peak efficiency. We specialize in domain-voltage short diagnostics, chip replacement using professional reflow stations, and PIC/EEPROM communication fault resolution. Common issues like "missing boards" and "SOC init failed" errors are fully addressed at the chip level.
- BM1370 / BM1368 chip reflow & replacement
- Domain voltage short diagnosis
- PIC / EEPROM communication repair
- High-density thermal interface refresh
- Hashrate stability tuning
Other brands we repair
- Whatsminer M30 – M60 seriesPSU connector overheating, fan-control board faults, temperature-sensor drift
- Avalon A12 – A15 seriesController communication errors, hashboard connector corrosion, PSU compatibility issues
- Innosilicon T2T / T3Hashboard, control board and power supply repair
From our repair bench
Litecoin / Dogecoin Miners
ScryptLitecoin/Doge · Scrypt · BM1491 Scrypt
Antminer L9
The L9 is Bitmain's flagship Scrypt (Litecoin/Dogecoin) miner and runs extremely hot, making its hashboards prone to chip failures and power-rail faults. We handle Scrypt ASIC chip replacement, core-voltage short-circuit diagnosis, MOSFET and buck-converter repair, and resolve "missing hashboard" and low-hashrate errors. Every L9 board is burn-in tested at full load before return.
- Scrypt ASIC chip replacement
- Core voltage short-circuit diagnosis
- MOSFET & buck-converter repair
- Thermal management & paste refresh
- 24-hour full-load burn-in test
Other brands we repair
- ElphaPex DG seriesHashboard, control board and power supply repair
- VolcMiner D1 / D1 HydroHashboard, control board and power supply repair
- Goldshell Mini-DOGE / LT seriesHashboard, control board and power supply repair
- Innosilicon A6+Hashboard, control board and power supply repair
From our repair bench
Other Altcoin Miners & Power Supplies
Kaspa · ETC · Dash · Monero · Kadena · APW PSUsKaspa · ETC · Dash · XMR · KDA · Antminer · IceRiver · Goldshell
Other Altcoin Miners
Beyond the three major coins, we repair the altcoin ASICs running in today’s farms: Kaspa (Antminer KS3 / KS5 / KS7, IceRiver KS series, Goldshell KA BOX), Ethereum Classic (Antminer E9, Innosilicon A10 / A11), Dash (Antminer D7 / D9), Monero (Antminer X5 / X9) and Kadena (Antminer KA3) — with the same chip-level workflow and burn-in testing.
- Kaspa / KHeavyHash hashboard repair
- Board-not-detected & chain repair
- Temperature-sensor & overheating fixes
- Power-rail & short-circuit repair
- Burn-in test before return
ALL · PSU · APW12 / APW17
Antminer PSU
The Miner on the APW12 or APW17 power supply — high-density units that require expert component-level care. We repair blown MOSFETs and rectifier diodes using original-spec parts, resolve PIC chip and voltage regulation failures on the control board, perform Power Factor Correction (PFC) circuit diagnostics with full capacitor bank overhauls, and restore units damaged by surge events such as grid instability or phase imbalances.
- MOSFET & rectifier replacement
- Chip repair
- PFC circuit diagnostics & capacitor overhaul
- Surge & grid-damage recovery
- Full-load 24-hour burn-in test
From our repair bench
For Solo Miners : Ready to get your miner repaired?
Contact us directly or order through our public storefront — fast turnaround, transparent pricing, no lock-in contracts.
Pricing
No retainers and no hidden fees. You pay per completed repair, whether it's one unit or an entire fleet.
Diagnostics
Waived with repair
No charge when you proceed
- Chip-level hashboard inspection
- Power rail & voltage testing
- Thermal imaging scan
- Fault isolation report
- Repair cost estimate
Component Repair
Per-unit pricing
Pay only for completed repairs
- ASIC chip reflow & replacement
- MOSFET & capacitor swap
- PSU component-level repair
- Burn-in validation test
- Parts & labor warranty
Fleet Overhaul
Volume discounts
Negotiated bulk rates on-site
- All component repair services
- On-site logistics coordination
- Priority scheduling
- Dedicated technician team
- Scrap parts audit & reporting
Common questions
We handle all levels — from fan and PSU replacement to full chip-level hashboard repair. Our technicians arrive with professional reflow stations, thermal imaging equipment, and original-spec components to perform the same repairs on-site that would otherwise require a service depot.
We specialize in Bitmain Antminer Z15, Z15 Pro and Z11, S21 Pro, S21+ and S21 XP, and L9 — as well as APW12/APW17 PSUs. We also service Whatsminer and Avalon units, and altcoin miners such as Antminer KS and IceRiver. Contact us if your model isn't listed.
Shipping miners across state lines is expensive, slow, and carries real risk of transit damage. Our on-site fleet eliminates all of that — we come to your farm, diagnose and repair in place, and get units back online the same day. You stay in control throughout.
We charge per completed repair — no fixed contracts, no retainers, no minimum commitments. You only pay for units we successfully fix. Each repaired device comes with parts and labor warranty.
We accept credit cards, ACH/bank transfer
Yes. Volume pricing is available for fleets with 300+ units. Contact our team to discuss rates based on your fleet size, miner models, and repair scope.
For every scrapped hashboard or PSU, we provide a detailed report with documented fault evidence and photos. With your consent, salvageable components may be repurposed as repair parts for other units — we never discard usable hardware without authorization.