The misconception is simple, but it is costly. When a Bitcoin miner fails, most operators treat it like a broken laptop. They look for a tech who can swap a part, run a diagnostic, and send it back. Joseph Florence of TechX, a West Virginia electronics manufacturing and repair company working in partnership with ASIC Exchange, argues that this approach is fundamentally wrong. He contends that a failed miner is not a failed computer; it is a failed industrial product. The difference matters because the standards for fixing them are not IT standards. They are manufacturing standards.
Florence made this case in a keynote at Mining Disrupt Miami 2022, held July 26–28, 2022. Drawing on 30 years as an executive in electronics manufacturing, he called it a ten-minute primer on picking a repair supplier, built around seven steps. When this session was recorded, Bitcoin traded at $21,268; on October 11, 2026 it was $82,940.
The Miner Is Broken Hardware, Not Software
Florence began by reframing the problem. He urged operators to stop thinking in terms of cryptocurrency mining when a unit fails. Instead, he asked them to look at the physical object in their hands. To a manufacturing engineer, a broken miner is not a specialized device; it is a generic failure mode in a high-density circuit.
it's a high density broken substandard performing electronic assembly
Joseph Florence · 3:01
This distinction dictates the required expertise. A supplier who understands Bitcoin but not electronics is ill-equipped to handle the task. Florence emphasized that the facility must have the infrastructure of a manufacturing plant, not a repair shop. This includes a quality management system, standard operating procedures, and proof of compliance with industry certifications. The goal, he stated, is to ensure that the vast majority of miners sent to a qualified facility can be repaired, with a target of 99 percent.
99 of all miners that are sent to us will be able to repair
Joseph Florence · 2:30
Why Hobbies Fail at High-Density Electronics
The second point of contention was the skill level of the technicians. Florence argued that diagnosing a miner is relatively easy, but repairing it to industry standards is difficult. The critical factor is not the diagnostician, but the person applying the soldering iron. He set a clear threshold for experience. A technician should not be a hobbyist or a self-taught enthusiast. They need a specific background in production.
five years sitting on a production line eight hours a day putting out product
Joseph Florence · 4:51
This requirement is tied to how the industry classifies electronics. There are three classes: consumer electronics, which you throw away when they break; industrial electronics, built for quality and longer life; and high-reliability electronics, Class 3. Florence classified Bitcoin miners as Class 3. This means they must be repaired to the highest available standard, not just the standard required to make them run again.
a minor is a class 3 electronics so not only do they have to have production experience
Joseph Florence · 5:23
The Invisible Killer: Ionic Contamination
One of the most subtle risks Florence highlighted was ionic contamination. This is a residue left on the circuit board after soldering, often from flux. Flux is an acid used to prepare metal for soldering. If it is not removed correctly, it leaves behind microscopic ions. These ions are invisible to the naked eye. They do not cause an immediate failure. Instead, they attract moisture from the air over time. Eventually, they create a conductive path between components that should be isolated, leading to a short circuit in the field.
ionic contamination you cannot see
Joseph Florence · 10:48
Florence described the process of identifying this contamination. On a badly cleaned board, he said, it looks like fungus and grows toward current. This visual cue is a late-stage indicator. By the time it is visible, the board is already compromised. He advocated for a multi-phase cleaning process that includes an ionic contamination tester. This allows the repair facility to statistically measure every cleaning lot, ensuring no residue remains. A repaired hash board cannot be cleaned by dipping it in water or spraying it off in a sink.
Heat Management and the Fragile Wire
Heat is the other primary enemy of the miner's internal components. Florence detailed the risks of thermal shock. When a technician removes or replaces an ASIC chip, the temperature change can damage the microscopic wires that connect the chip to the board. These wires are fragile. If the heat is applied too quickly or too intensely, the wire can fail.
wire will crack fracture or break
Joseph Florence · 7:34
To prevent this, facilities must use controlled preheating and cooling processes. The temperature ramp must be gradual. Florence also highlighted the risk of electrostatic discharge, or ESD. A single static shock can create a pinhole in a circuit trace. This damage is also invisible and may not cause an immediate failure. The board may pass initial tests and be sent back to the miner. Weeks or months later, the trace separates, causing a short. A facility-wide ESD control plan, including wrist straps and grounded infrastructure, is essential to prevent this.
The 168-Hour Moisture Deadline
Another specific constraint Florence outlined was moisture sensitivity. ASIC chips are shipped in sealed bags that are labeled as moisture sensitive. These are classified as MSL3, which stands for Moisture Sensitivity Level 3. This designation imposes a strict time limit on how long the component can be exposed to air.
it's an msl3 which means it has 168 hours after you open that bag
Joseph Florence · 8:49
If the bag is opened and the chip is not used within 168 hours, it absorbs moisture from the air. If it is then subjected to the heat of rework, that moisture turns to steam, causing the component to crack or delaminate. A part left out too long can be salvaged by taking the humidity out of it, he said; one put under heat after absorbing moisture will crack, delaminate and fail in the field later.
Certification as the Only Gatekeeper
Florence concluded by emphasizing the role of certification. The standards he named were IPC-A-610, the acceptability standard for electronic assemblies; IPC's rework and repair standards; and J-STD-001. They are the benchmarks for acceptability of electronic assemblies and rework. A repair facility should be able to demonstrate compliance with these standards. The presence of these certifications is the primary gatekeeper between a high-quality repair and a costly failure. Mining Disrupt 2027 runs March 22 to 24 in Irving, Texas.