Antminer BM1398AD S19a S19aPro Hash Board Replacement Chip

BM1398AD ASIC Chip – Antminer S19a & S19a Pro Hashboard Replacement

When a chip position on your Antminer S19a or S19a Pro hashboard stops hashing, the BM1398AD is the drop-in replacement that restores full chain output. Each IC is sourced to match the original Bitmain specification, ensuring the replaced position contributes its full share of hash rate with maximum efficiency and minimal power overhead.

Maximise Mining Output with Chip-Level Repair

Replacing a single failed ASIC chip costs a fraction of swapping the entire hashboard — and gets the board back into production the same day. Use a test fixture to scan the hash chain and pinpoint the bad position, de-solder the faulty BM1398AD, re-ball and re-flow the replacement, then re-scan to confirm the repair. The BM1398AD's computational efficiency means the repaired position runs at the same hash rate and power draw as its neighbours.

Installation Best Practices

Pre-heat the board to 100–120 °C before de-soldering the failed chip to avoid thermal shock to surrounding components. Apply solder paste using the BM1398 tin tool stencil, place the new BM1398AD, and reflow following the recommended lead-free BGA profile. After cooling, run the test fixture one more time to verify correct clock response and hash output on the replaced position.

BM1398AD ASIC Chip Specifications

Related BM1398 & S19a Repair Tools

• BM1398 Tin Tool Fixture with Stencil & Holder
• BM1398BB / BM1398AC ASIC Chip – Antminer S19 Series
• S19a Thermal Paste Stencil Mold
• S19a Pro Water Cooling Plate

Repairing S19a boards in volume? Contact us at contact@lys-sz.com for BM1398AD chip pricing on quantities of 50+.

Worldwide shipping from our Shenzhen warehouse.