Antminer S19j S19jpro S19j Pro+ Amlogic A113D Motherboard C76
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Antminer S19j / S19j Pro Amlogic A113D Control Board (C76) – Replacement Motherboard
The Amlogic A113D (C76) control board is the brain of the Antminer S19J, S19J Pro, S19J Pro+, and S19XP. It handles pool connectivity, ASIC clock distribution, fan control, and temperature monitoring. When the original board fails — corrupted NAND, dead Ethernet PHY, or a blown voltage regulator — the miner drops offline entirely. This direct-fit replacement restores full operation without firmware reconfiguration; just swap, boot, and mine.
Common Failure Patterns on the C76 Board
Typical symptoms include the miner not appearing on the network (CPU or Ethernet failure), the dashboard showing zero hash boards detected (data-bus fault), or continuous reboot loops (corrupted boot media). A less obvious failure mode is partial hash-board detection — where only one or two of three boards show up — which can indicate a damaged data connector or signal-level fault on the control board rather than a hash-board problem.
Installation and Verification
Power down the miner and disconnect all cables. Remove the mounting screws, unplug hash-board ribbon cables and fan connectors, and slide the old C76 out. Install the replacement in the same orientation, reconnect everything, and boot. Access the miner's web interface to confirm all three hash boards are detected and hashing. If the firmware version on the new board differs from the one on your network, update it to the latest Bitmain release for feature consistency across the fleet.
A113D C76 Control Board – Compatibility
| Parameter | Value |
|---|---|
| CPU | Amlogic A113D |
| Board Version | C76 |
| Substrate | Aluminum |
| Compatible Models | S19J, S19J Pro, S19J Pro+, S19XP |
| Cooling Type | Air-cooled SHA-256 miners |
| Condition | New |
Related Antminer S19J Control Boards & Repair Parts
- S19J / S19J Pro Beaglebone Control Board
- S21 A113D C76 Control Board
- YT8512C Ethernet PHY – S19J Pro C76 Repair
- SY6280 Switch IC – C76 A113D Control Board
Need S19J control boards in quantity? Contact us at contact@lys-sz.com for availability and volume pricing.
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