As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU ALTITUDE NO START - COLD SOAKED. APU SHUTDOWN AFTER REACHING 95 PERCENT SPEED AFTER 10 SECONDS. APU RAN STABILIZED AT 100 PERCENT FOR 1 MIN THEN APU FAULT AND APU GEN EICAS MESSAGE DISPLAYED. ACCOMPLISHED SUCCESSFUL APU ALT COLD SOAK START. REPLACED NR 2 THERMOCOUPLES PER MM. APUC FAULTED NR 2 TC RAKE SNAPSHOT READS EGT 278 RPM 78 PERCENT.