As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE EXPERIENCED RUMBLING/VIBRATION SEEMING TO COME FROM AVIONICS COMPARTMENT. ALSO EXPERIENCED ELECTRICAL BURING ODOR (NO SMOKE). DIVERTED TO BHM AND LANDED UNEVENTFULLY. VERIFIED AVIONICS BLOWER FAN FAULTY AND APPLIED MEL PROVISIONS. RAN PACK AND VERIFIED ABSENCE OF ODOR AND SMOKE. RETURNED A/C TO SERVICE.