Avalon 1166 1246 Boost Module 17.5V – Hashboard Repair

Avalon 1166 / 1246 Boost Module 17.5V – Direct Replacement for Hashboard Power Repair

Restore your Avalon 1166 or 1246 miner to peak performance with this high-quality 17.5V boost module — the perfect solution for hashboard power circuit failures. Designed as a direct replacement for damaged boost areas, this module ensures stable voltage regulation with built-in undervoltage lockout (UVLO), current limiting and thermal overload protection to prevent future failures. When this booster fails, the hashboard reports drive-fault errors, refuses to enable one or more domains, or dies on first power-up — even though the buck converters and ASICs themselves test fine. Replacing the boost module restores the gate drive and brings the board back to nominal hashrate.

Stable 17.5V Output with Built-in Protection

• Plug-and-play installation – no complex modifications, replace a faulty boost board in minutes
• Robust protection features – UVLO, current limit and thermal overload safeguard against power surges, overheating and voltage drops
• Premium build quality – durable PCB with metal components for long-lasting mining performance
• Optimised for Avalon miners – specifically designed for 1166 & 1246 models
• Quick miner revival – minimise downtime and maximise hash rate with a reliable power fix

Whether you run a mining farm or a repair bench, this 17.5V boost module is a must-have spare part for keeping Avalon miners running smoothly.

Replacement Procedure

Power off the miner and isolate. Remove the affected Avalon 1166 / 1246 hashboard. Inspect the boost module footprint for short circuits across the input — clear any short before mounting a new module, otherwise the replacement will fail in seconds. Desolder the failed booster (hot air or soldering iron, depending on the module style), clean the pads, place the new boost board respecting the orientation silkscreen, and re-flow. Verify the 17.5V rail is in spec on a bench supply before reinstalling the hashboard in the miner.

Avalon 1166 1246 Boost Module Specifications

Related Avalon 1166 / 1246 Repair Parts

• Avalon 1066pro / 1166pro / 1246 / 1266 Control Board
• Avalon 1066 Control Board – Canaan Motherboard
• Avalon PSU 3300W 03 Plus – A1166 / A1166Pro / A1246
• Avalon 1066 Water Cooling Kit

Repairing Avalon 1166 / 1246 hashboards in volume? Contact us at contact@lys-sz.com for tray-quantity boost module pricing.Worldwide shipping from our Shenzhen warehouse.