What was found
5 MINUTES INTO CLIMB, CREW REPORTED SMOKE FROM AVIONICS RACK, RETURNED W/O INCIDENT. MECHANIC FOUND A/P PITCH SERVO HARNESS SHORTED, CAUSING A/P COMPUTER TO FAIL INTERNALLY, (TRANSISTORS OVERHEATED AND BURNED) REPAIRED SHORTED HARNESS. REPAIRED A/P COMPUTER, RETURNED MECHANIC TO SERVICE. (NE01200306064)