As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHX - FLT 207 - DURING TAXI OUT, FLIGHT ATTENDANTS AND PASSENGERS REPORTED A SMOKE SMELL IN AFT CABIN. NO VISIBLE SMOKE ONLY SMELL. FOUND HOT, EMERGENCY LIGHT BALLAST AND FORWARD LIGHT BALLAST. REPLACED EMERGENCY LIGHT POWER SUPPLY M1133 AND FORWARD ENTRY BALLAST ON LP 8560591 IAW B737-300 AMM 33-27-00 AND 33-51-51.