BM1487AA ASIC Chip for Antminer L5 Hashboard repair

BM1487AA ASIC Chip | Replacement IC for Antminer L5 LTC / DOGE Hashboard Repair

The BM1487AA is the hashing ASIC chip used on Antminer L5 hashboards for Scrypt-algorithm mining (Litecoin / Dogecoin). Each chip is a single point in the long serial chain that runs the length of the hashboard — when one chip fails, the chain reports incomplete and the affected hashboard drops to a low or zero hashrate. Swap the failed chip out, reflow the chain, and the board returns to normal duty.

Direct drop-in replacement — same package, same pinout, same electrical envelope as the chip originally fitted at the factory. Stocked in volume for repair shops servicing L5 fleets and individual miners replacing failed chips at the bench.

When to Replace the BM1487AA

• Hashboard reports low or zero hashrate — chip chain incomplete on one board while other boards run normally.
• Chip count mismatch in the chain scan — diagnostic tool flags the failing position.
• Visible damage on a chip — burnt, cracked, or delaminated package after thermal stress or transient event.
• Single-board failure after a known fault event — short, power surge, or thermal runaway likely killed one or more chips along the chain.

BM1487AA ASIC Chip Specifications

FAQ — BM1487AA ASIC Chip

Q: BM1487AA vs BM1487 (no suffix) — interchangeable?
A: The BM1487AA is the production revision used on Antminer L5 hashboards. Match the silk marking on your existing chips as the final confirmation. Other BM1487 variants targeted different miner models with subtly different parameters.

Q: How do I identify which chip in the chain failed?
A: Use an ASIC chip tester or L5 hashboard test fixture that scans the serial chain and reports the position of the first failure. Locate that physical chip on the board, desolder, and fit a fresh BM1487AA in its place.

Q: Rework profile?
A: Standard hot-air rework with flux paste. Preheat the board to 100°C before applying hot air, peak around 320°C with controlled dwell time. A precision tin tool / stencil for the BM1487 footprint makes chip placement repeatable across multiple repairs.

Q: Bulk pricing for repair shops?
A: Yes — email contact@lys-sz.com for volume pricing on BM1487AA chip stock and matched tin tool kits.

Related products

• BM1485 ASIC Chip (Antminer L3 / L3+ / L3++)
• BM1491AA ASIC Chip (Antminer L9)
• BM1485 Tin Fixture Tool Kit (Antminer L3 / L3+ / L7)
• Antminer L3+ D3 Control Board

Antminer L5 fleet operators stocking BM1487AA chips by the tray? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouse.