As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
VOR FREQ DISPLAY DOES NOT RESPOND PROPERLY TO SELECTOR OPERATION. WHEN TOGGLING THE AUTO/MAN SELECTOR SWITCH, SWITCH OPERATION FROZE AN ELECTRICAL BURNING SMELL WAS NOTICED BY ALL CREW MEMBERS. AUTO/MAN SWITCH FROZE. REMOVED AND REPLACED CAPT'S VOR CONTROL PANEL, OPS CKS GOOD PER MM 34-51-02 PN/ON 285 T0554-5 OFF 285T0554-5 SN/ON D02419 OFF D02757.