What was found
AFTER T/O NOTICED BURNING SMELL IN FLT DECK (NO SMOKE), SHUT OFF RECIR FAN, SMELL BEGAN TO DISSIPATE. MX COULD NOT DUPLICATE. AGAIN NOTICED ELECTRICAL BURNING ODOR IN FLT DECK. LT & RT UTILITY BUSSES WERE SHUT DOWN, ODOR DISSIPATED. MX REPLACED RT RECIR FAN, R & R NR 2 FWD EQUIP COOLING FAN. BOTH AC PACKS, NR 2 EQUIP COOLING FAN RAN FOR HOURS, NO ABNORM. TEST FLT MX ONBOARD, AT 30 TO 40 XA SMOKE & ODOR APPEARED AT RT FWD WINDOW LOWER RT CORNER COMING FROM A WINDOW ANTI-ICE CONNECTOR. POWER TO CONNECTOR WAS SHUTDOWN. MX FOUND J5 CONNECTION POINT LOOSE AT LWR RT CORNER OF F/O'S WINDOW. CLEANED TERMINAL, WINDOW CONTACTS, REPLACED WINDSHIELD CONNECTION PLUG & PACKING.