As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 774 AUA-BOS DIVERTED TO BDA, SMOKE IND IN COCKPIT FOR AFT AVIONICS (LTV) RACK. PERFORMED GENERAL INSP PER TSM 23-39-00-810-801. FOUND LTV COOLING FAN SEIZED, FAN LIGHT ON AND C/B TRIPPED. REMOVED AND REPLACED COOLING FAN PER LTV MM 23-39-00. OPS CHECK OK.