What was found
MIA - FLT 5386 - PASSENGER SERVICE UNIT ABOVE SEAT 5A EXCESSIVELY HOT WITH ASSOCIATED SMOKE AND ODOR. TURNED OFF MAIN SWITCH FOR ALL PASSENGER READING LIGHTS, HEAT, SMOKE AND ODOR DISSIPATED. AIRCRAFT LANDED SAFELY. REMOVED AND REPLACED PASSENGER SERVICE UNIT ABOVE SEAT 5A. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE. (M)