Innosilicon A4+ Control Board PCBA replacement Motherboard

Innosilicon A4+ Control Board PCBA | Brand-New Replacement Motherboard for Scrypt Miner

The Innosilicon A4+ control board is the brand-new replacement PCBA motherboard for the Innosilicon A4+ LTC / DOGE Scrypt miner. Having a working control board is essential to ensure miner performance and longevity — the controller manages every input and output signal between hashboards, PSU, fans, and the network interface, and a degraded board quickly translates into reduced hash rate, intermittent crashes, repeated reboots, or a fully offline rig.

This board is a direct PCBA-level swap into the original A4+ chassis: install, verify hashboard detection, and the rig returns to its rated 620 MH/s hash rate without firmware re-flashing in standard configurations. Every unit ships pre-tested and protected with anti-static packaging — repair benches and Scrypt mining farms keep these on the shelf as the standard A4+ recovery part.

Brand-New A4+ Motherboard for Reliable Mining Operations

The control board is responsible for managing the device's input and output signals, so it is important that all connections and components on it are in good working order. When a control board has degraded, you may experience problems with the device's functioning, and it may not operate correctly or as efficiently as it should. Regular maintenance and timely replacement keep your A4+ running at its full Scrypt-mining potential.

Common A4+ Control Board Failure Symptoms

• Miner does not boot — power LED on but no dashboard reachable on LAN.
• Hashboard chains missing — dashboard shows 0 / 3 or 1 / 3 chains detected.
• Random reboots under load — A4+ cycles power without operator action.
• Fan errors with healthy fans — controller misreads fan tach signals.
• Network port unresponsive — Ethernet link LED off, no DHCP lease.

Any of these symptoms typically points to a controller-level fault, and a fresh PCBA swap is the standard recovery path before committing to component-level repair.

Innosilicon A4+ Control Board Specifications

FAQ — Innosilicon A4+ Control Board

Q: Will this board work on my A4 Dominator (older version)?
A: This is the A4+ revision. The original A4 Dominator uses a different controller — confirm with our sales team before ordering if you have any doubt about your miner revision.

Q: Do I need to re-flash firmware after installation?
A: In standard configurations, no — the board boots with factory A4+ firmware and acquires hashboards normally. If you run a custom firmware build, you may need to reload it via the standard Innosilicon flashing tool.

Q: How long is the typical install on an A4+?
A: Around 15-20 minutes for an experienced technician — power down, disconnect cables, swap board, reconnect, power on.

Q: Do you ship worldwide?
A: Yes — DDP shipping for the US and EU (duties included), and standard shipping with local customs for the rest of the world.

Q: Bulk pricing for repair shops?
A: Yes — email contact@lys-sz.com with the quantity and we will send a volume quote.

Related products

• Innosilicon A10 Pro 8G Control Board PCBA
• Innosilicon A6+ Control Board PCBA
• Innosilicon A4+ Test Fixture (Hashboard Repair)
• Universal Innosilicon Test Fixture Kit (T1/T2/T3/A4+/A6+)

Maintaining an Innosilicon A4+ fleet at scale? Email contact@lys-sz.com for bulk control-board pricing and matched repair kits. Worldwide shipping from our Shenzhen warehouse.