As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A STRONG ELECTRICAL BURNING SMELL WAS NOTICED IN THE COCKPIT. FOLLOWED COCKPIT OPERATING PROCEDURE AND SMELL WAS EVACUATED, SOURCE WAS UNKNOWN. FOUND THE FORWARD EQUIPMENT COOLING SUPPLY FAN CIRCUIT BREAKER POPPED, AND WAS UNABLE TO RESET. REPLACED FORWARD EQUIPMENT COOLING FAN. SYSTEM CHECKED NORMAL.