As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT PACK LIGHT ILLUMINATED ON MC RECALL. "PACK" LIGHT EXTINGUISHED WHEN SYSTEM RESET. GROUNDED - YES. ACCOMPLISHED B737-800 FIM 21-62 TASK 801, FOUND R TCV FAULT. REMOVED AND INSTALLED NEW RIGHT TCV PER AMM 21-51-10/401, OPS NORMAL. GROUND VERIFICATION SUCCESSFUL.