Antminer L3+ 14V Voltage Boost Board for Hashboard repair

Antminer L3+ 14V Voltage Boost Module with 220 Inductor for Hashboard Repair

This Antminer L3+ 14V boost module is a pre-assembled replacement for the voltage booster circuit on L3+ hashboards. Featuring a 220 inductor and built-in protection circuitry, the module can be directly soldered onto the hashboard without any jumper wires. When the original boost circuit fails — causing the 14V rail to drop and chips to go offline — this module restores full voltage output and brings the hashboard back to normal operation.

L3+ 14V Boost Module Specifications

Diagnosing 14V Boost Circuit Failure on L3+ Hashboards

The L3+ hashboard relies on the 14V boost circuit to provide adequate voltage to a section of the BM1485 chip chain. When this circuit fails, the affected chips stop hashing — typically showing as a block of missing chips in the miner status log rather than scattered individual failures. Measuring the 14V test point on the hashboard with a multimeter confirms the diagnosis. If the reading is zero or significantly below 14V, the boost circuit has failed and this replacement module is the correct repair. The direct-solder design means no trace cutting or wire jumpers are needed, keeping the repair clean and reliable.

Boost Module vs. Step-Down Module: Which L3+ Repair Do You Need?

The L3+ hashboard has both a 14V boost circuit and a 10V step-down (buck) circuit. These serve different voltage domains and fail independently. If your multimeter shows the 14V rail is down, you need this boost module. If the 10V rail is the problem, a step-down buck module is the correct replacement. Many repair technicians stock both types since either can fail and the diagnostic is straightforward with a multimeter.

Related L3+ Repair Modules and Hashboard Parts

• Antminer L3+ 10V Step-Down Buck Module
• Antminer L3+ U73 Step-Down Module — Black Version
• L3+ S9 14V Boost Module RT8537 Green Version
• XL6009 Buck Boost Converter for S17 S17pro T17E

Restore your L3+ hashboard to full hashrate. Order now or contact us at contact@lys-sz.com for volume pricing on repair modules. Worldwide shipping available.