As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GNDED. DURING FLIGHT AN ACRID & ELEC ODOR WAS REPORTED IN THE MID CABIN AREA. FOUND READING LIGHT TRANSFORMER T1-90 HOT & EMITTING ODOR. R & R TRANSFORMER & ACCOMPLISHED OPERATIONAL CHECK IAW AMM 20-50-06. SYS CHECKED NORMAL.