As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) BURNING SMELL COMING FROM BEHIND THE CAPT CHAIR THE LT ESSENTIAL BUSS TIE SWITCH WAS EXTREMELY HOT TO TOUCH. BURNING SMELL AND HOT, SWITCH REMAINED ON FOR DURATION OF THE FLIGHT. ON TAXI FROM APRON TO HANGER THE LT ESSENTIAL BUS TIE SWITCH WAS TURNED OFF AND SWITCH COOLED DOWN BY TIME ACFT REACHED HANGER. SWITCH WAS REPLACED AND NO MORE HOT BURNED ODOR. ACFT RETURNED TO SERVICE.