What was found
(CAN) LEFT HIGH FREQUENCY (HF) RADIO FAILED WHILE TRANSMITTING DURING CRUISE. SHORTLY AFTER BURNING ACRID ELECTRICAL SMELL FILLED COCKPIT. QUICK REFERENCE HANDBOOK ELECTRICAL SMOEK DRILL CARRIED OUT. LEFT HF TURNED OFF, CIRCUIT BREAKERS PULLED, AND UTILITY BUSSES SELECTED OFF. SMELL EVENTUALLY DISSIPATED. BURNING SMELL TRACED TO LEFT HF TRANSCEIVER. HF TRANSCEIVER REPLACED AND OPERATION CHECKED SERVICEABLE.