As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER LANDING THERE WAS A BURNING ELECTRICAL SMELL IN COCKPIT COULD NOT TELL WHERE IT WAS COMING FROM. FOUND BURNING SMELL CAME FROM OUT OF F/O P7 PNL P7 SWITCH. SUSPECT INTERNAL ARCING IN RHEOSTAT WAS HOT. PULLED C/B P31 ON P11 PNL. FWD TO MCO AND PLACARD.