As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMB OUT F/O HSI WENT OFF LINE & ELEC SMOKE SMELLED. RETURNED TO DEPARTURE. ACCOMPLISHED FIM 24-51-19-00. INSPECTED BEHIND F/O HSI & F/O INSTR PNL. NO DEFECTS NOTED. E/E COOLING MONITOR CK OK. FOUND F/O VENT PARTIALLY BLOCK W/DEBRIS. REPLACED F/O HSI IAW AMM 34-22-04. GND OPS CK OK. ACCOMP LMP MCDP TEST 30, TEST PASS, ACFT OK TO REMAIN AT LAND 3.