Hashboard Diagnostics & Micro-Soldering Fundamentals
Practical training in test fixture troubleshooting, domain voltage tracking, and surface-mount ASIC chip replacement.
Program Overview
Master diagnostic test fixtures, LDO regulator testing, and hot-air reflow soldering to fix zero-hash boards instead of paying expensive overseas shipping.
Taught directly inside our Cowwarr workshop laboratory or delivered on-site at your facility in Victoria, this program emphasizes hands-on physical experience rather than slide-based lectures. Every participant works with calibrated diagnostic tools, real hashboards, and industrial-grade electrical switchgear.
Target Audience & Prerequisites
Who This Is For
Electronics technicians, repair shop operators, and self-maintainers managing 50+ mining units who want in-house component-level repair capabilities.
Prerequisites
Previous soldering experience (through-hole or basic SMD) and familiarization with multimeter diode testing.
Detailed Practical Outcomes
- Operating official diagnostic test fixtures to isolate faulty ASIC chips in a domain chain.
- Tracing clock (CLK), reset (RST), input (RX), and output (TX) serial transmission signals with an oscilloscope.
- Using pre-heating plates and temperature-profiled hot air nozzles to desolder and resolder high-pin-count ASIC chips without warping the substrate.
- Replacing buck converters, boost circuits, EEPROM chips, and thermal sensors.
Course Syllabus & Practical Stages
-
Day 1
Signal Tracing & Domain Power Architecture
Understanding series domain power steps (e.g. 14 domains @ 0.9V), clock trees, and using diagnostic test fixtures.
-
Day 2
SMD Rework, Stenciling & Reballing
Applying solder paste with steel stencils, chip replacement techniques, heat sink thermal epoxy application, and QA soak testing.
Scope & Inclusions
- 16 hours of 1-on-1 guided workbench time.
- Printed diagnostic flowcharts and signal truth tables.
- Commercial test fixture units for take-home use.
- Guarantee of repairing personal broken boards brought from home (time permitting, 1 board evaluated).
Lab Safety & Capacity Constraints
Strict cap of 4 students per class. ESD wristbands and safety glasses required at all times.