Modern application-specific integrated circuit (ASIC) miners operate under extreme thermal and electrical stress. When hashboards drop chains, register 0 ASIC chips, or experience voltage domain failure, replacing entire units is prohibitively expensive. This 2-day hands-on clinic takes participants through systematic root-cause diagnosis, test fixture utilization, serial bus communication tracing (CLK, RST, BO, RI, RO lines), micro-soldering chip replacements, and thermal interface renewals.