BM1366BS ASIC Chip for Antminer S19kPro Hash board repair

BM1366BS ASIC Chip | Replacement IC for Antminer S19K Pro Hashboard Repair

The BM1366BS is the hashing ASIC chip used on Antminer S19k Pro hashboards. 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 S19k Pro fleets and individual miners replacing failed chips at the bench.

When to Replace the BM1366BS

• 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 coolant intrusion likely killed one or more chips along the chain.

BM1366BS ASIC Chip Specifications

FAQ — BM1366BS ASIC Chip

Q: BM1366BS vs other BM1366 variants — interchangeable?
A: Match the silk marking on the chips already on your hashboard. BM1366BS is for the S19k Pro hashboard specifically. Other BM1366 variants (AG, AL, AJ, AK, BP) target different miner models with subtly different parameters. Mixing risks reduced chain stability.

Q: How do I identify which chip in the chain failed?
A: Use an ASIC chip tester or hashboard test fixture that scans the serial chain and reports the position of the first failure. Once the failing position is known, locate that physical chip on the board, desolder, and fit a fresh BM1366BS 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 BM1366 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 BM1366BS chip stock and matched tin tool kits.

Related products

• BM1366 ASIC Chip Test Fixture (S19XP / S19K Pro)
• Tin-Plated Steel Mesh (BM1366AL / AG / BS Chips)
• BM1370BC Chip Tin Tool Station
• BM1370 Series ASIC Chip Tester

S19k Pro fleet operators stocking BM1366BS chips by the tray? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouse.