As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) UPON DEPARTURE FROM THE AIRPORT, THE PILOT SMELLED SMOKE IN THE COCKPIT. RETURNED TO THE AIRFIELD AND HAD MAINTENANCE INSPECT THE AIRCRAFT. RADIO NR 2 HAD A BURNT SMELL TO IT. RADIO WAS REMOVED AND DEFECT DEFERRED. PILOT CONTINUED ON WITHOUT FURTHER INCIDENT. AVIONICS SHOP FOUND A CAPACITOR THAT HAD FAILED.