As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ALB - FLT 6685 - ALB/BOX - FLT 6685 - RETURNED TO ALB DUE TO ELECTRICAL BURNING SMELL IN THE FLIGHT DECK. AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE CAPTAIN'S UPPER EFIS TUBE TO BE AT FAULT. THE EFIS TUBE WAS REPLACED. REQUIRED OPERATIONAL CHECKS WERE PERFORMED AND AIRCRAFT RETURNED TO SERVICE. (X)