What was found
FLT 496 - PHX-DEN - ELECTRICAL SMELL - AT CRUISE, FL390, AFTER 15 MINUTES AN ELECTRICAL SMELL, PERCEIVED BY THE FLIGHTDECK AND CABIN CREW AT THE SAME TIME. SMELL DISSIPATED RAPIDLY, THEN THE AIRCRAFT WAS PUT INTO CLOSED CONFIGURATION PER CHECKLIST. FOUND SMELL COMING FROM THE RIGHT RECIRCULATION FAN. ALSO FOUND "AIR COND/RECIR FAN/R/SPLY" CIRCUIT BREAKER POPPED. REMOVED AND REPLACED RECIRCULATION FAN PER AMM 21-21-51-401.