As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING START UP FOR ENGINE NR 4, A NOTICABLE ELECTRICAL SMOKE SMELL WAS APPARENT IN THE COCKPIT. MAINTENANCE VERIFIED SMOKE SMELL TO THE RIGHT GNSX DISPLAY THAT WAS JUST DEFERRED. MAINTENANCE PULLED AND COLLARED NMV2 CB ON PANEL 131-12-00. ELECTRICAL SMELL NO LONGER PRESENT.