Description
Antminer S19j Pro Hashboard Replacement
The Antminer s19j pro hashboard replacement is a reliable choice for Bitcoin mining operations.
The Antminer S19j Pro remains one of the most widely deployed SHA-256 miners in the field — reliable, efficient, and battle-tested across thousands of home and commercial operations. When a hashboard fails, you lose roughly a third of your hash power. This original Bitmain replacement hashboard for the Antminer S19j Pro restores your miner to full operating capacity. Tested, verified, and ready to install.Each S19j Pro hashboard carries 126 BM1362 ASIC chips arranged across 42 voltage domains with an operating voltage of approximately 0.32V. The board includes a boost circuit that steps power from 15V to 20V for the ASIC chain. Combined with the S19j Pro’s control board and APW12 power supply, three of these boards deliver the miner’s full rated hash rate (96–104 TH/s depending on your specific model variant).
D-Central has repaired more Antminer S19j Pro units than we can count. We know the failure modes — blown boost circuits, dead BM1362 chips, damaged domain connectors — and we know when a board-level repair makes sense versus a full board replacement. When you order from us, you are getting a part verified by technicians who repair these boards professionally from our facility in Laval, Quebec.
Technical Specifications
| Specification | Value |
|---|---|
| Compatible Miner | Bitmain Antminer S19j Pro (~96–104 TH/s variants) |
| ASIC Chip | BM1362 |
| Chips per Board | 126 |
| Domain Configuration | 42 domains × 3 chips |
| Operating Voltage | ~0.32V per domain |
| Boost Circuit | 15V → 20V |
| Hash Rate per Board | ~32–35 TH/s |
| Algorithm | SHA-256 (Bitcoin) |
| Boards per Miner | 3 |
| Power Supply | APW12 (required, not included) |
| Condition | Tested & verified functional |
| Testing | Full hash test on S19j Pro test jig before shipment |
Key Features
- Original Bitmain hardware — genuine BM1362 chips, factory PCB design, correct domain and boost circuit configuration for the S19j Pro platform
- Pre-tested and verified — every board is run on a test jig to confirm all 126 chips respond and hash correctly before it leaves our facility
- Drop-in replacement — physically and electrically matched to the factory board; connect data and power, boot, and start hashing
- Recover lost hash power — a dead board means ~32–35 TH/s offline. This board brings your miner back to full capacity at a fraction of the cost of a new unit
- Aluminum substrate PCB — superior thermal dissipation for sustained operation under load
Compatibility
This hashboard is designed for the Bitmain Antminer S19j Pro (air-cooled). Important version notes:
- Board revisions vary — S19j Pro hashboards exist in multiple hardware revisions (e.g., v1.3, v1.7). These revisions are not always interchangeable. Contact us with your miner’s serial number or existing board revision before ordering to confirm compatibility.
- S19j Pro 104T “No Pic” variants — some 104 TH/s models use a different chip configuration (BM1397B). Verify your chip type first.
- Not compatible with S19, S19 Pro, S19 XP, S19k Pro, or S19j (non-Pro) models, which use different ASIC chips and board layouts.
When in doubt, send us a photo of your existing hashboard or your miner serial number and we will confirm the correct replacement before you order.
Installation Overview
- Power off the miner and fully disconnect from the APW12 power supply
- Remove the fan assembly on the side nearest the failed hashboard
- Disconnect the data ribbon cable and both power connectors from the failed board
- Slide out the defective board and slide in the replacement
- Reconnect the data ribbon cable and power connectors firmly
- Reassemble the fan assembly, reconnect the PSU, and power on
- Verify all three chains appear in the miner web interface and are hashing at expected rates
A hashboard swap on the S19j Pro takes 15–30 minutes with a screwdriver. If you prefer professional service, send your miner to our repair team and we will handle the replacement, burn-in testing, and quality assurance before shipping it back.
Frequently Asked Questions
How do I identify which hashboard has failed?
Log into your miner’s web interface (Kernel Log or Miner Status page). A failed board will show as a missing chain (e.g., Chain 0, 1, or 2 absent), zero hash rate on one chain, or repeated ASIC errors concentrated on a single chain. Temperature readings of 0°C on one chain while others read 60–80°C is another clear indicator. For help with diagnosis, contact our repair team.
My S19j Pro shows reduced hash rate but no chain is fully offline. Do I need a new board?
Not necessarily. Reduced hash rate on one chain can indicate individual chip failures or a failing component rather than a dead board. In many cases, board-level repair (replacing specific chips, fixing solder joints, or replacing a blown boost component) is more cost-effective than a full board replacement. D-Central offers both options — contact us for a repair assessment.
How do I check my hashboard version?
The board revision is printed on the PCB itself, typically near the edge connector or power input area. Common S19j Pro revisions include v1.3 and v1.7. You can also find version information in the miner’s diagnostic logs or on the sticker attached to the board. Send us a clear photo and we will match the correct replacement.
Can I repair my existing hashboard instead of replacing it?
Often, yes. D-Central specializes in hashboard-level repair. Common S19j Pro failures include blown boost circuit components, dead BM1362 chips, and damaged temperature sensors — all of which are repairable at the component level. A repair typically costs less than a full replacement board. Get a repair quote before deciding.
Do you ship replacement hashboards internationally?
Yes. We ship from our Laval, Quebec facility across Canada, to the United States, and worldwide. All boards are carefully packaged in anti-static bags with foam protection to prevent damage in transit. Canadian customers benefit from faster delivery and no customs delays.
Why D-Central
D-Central Technologies has been Canada’s Bitcoin mining hardware authority since 2016. Our Laval, Quebec facility handles everything from selling new miners to repairing hashboards at the chip level. When you buy a replacement hashboard from us, it has been tested by the same technicians who repair hundreds of boards per month. That is not a warehouse operation — that is expertise you can verify.
We stock replacement boards, individual chips, and repair parts for the full S19 family because we believe in keeping hardware running, not throwing it away. Right to repair is not just a slogan here — it is how we operate. Every hash counts, and every board we put back into production is hash rate returned to the Bitcoin network. Explore our full ASIC repair services.
How do I identify which hashboard has failed?
Log into your miner’s web interface (Kernel Log or Miner Status page). A failed board will show as a missing chain (e.g., Chain 0, 1, or 2 absent), zero hash rate on one chain, or repeated ASIC errors concentrated on a single chain. Temperature readings of 0°C on one chain while others read 60–80°C is another clear indicator. For help with diagnosis, contact our repair team.
My S19j Pro shows reduced hash rate but no chain is fully offline. Do I need a new board?
Not necessarily. Reduced hash rate on one chain can indicate individual chip failures or a failing component rather than a dead board. In many cases, board-level repair (replacing specific chips, fixing solder joints, or replacing a blown boost component) is more cost-effective than a full board replacement. D-Central offers both options — contact us for a repair assessment.
How do I check my hashboard version?
The board revision is printed on the PCB itself, typically near the edge connector or power input area. Common S19j Pro revisions include v1.3 and v1.7. You can also find version information in the miner’s diagnostic logs or on the sticker attached to the board. Send us a clear photo and we will match the correct replacement.
Can I repair my existing hashboard instead of replacing it?
Often, yes. D-Central specializes in hashboard-level repair. Common S19j Pro failures include blown boost circuit components, dead BM1362 chips, and damaged temperature sensors — all of which are repairable at the component level. A repair typically costs less than a full replacement board. Get a repair quote before deciding.
Do you ship replacement hashboards internationally?
Yes. We ship from our Laval, Quebec facility across Canada, to the United States, and worldwide. All boards are carefully packaged in anti-static bags with foam protection to prevent damage in transit. Canadian customers benefit from faster delivery and no customs delays.
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