As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHORTLY AFTER T/O, FWD EQUIPMENT OVERHEAT EICAS MESSAGE. PLACED EQUIPMENT COOLING SELECTOR IN STANDBY, THEN OVERRIDE PER QRH. AFTER 30 MIN, SWITCH TO AUTO, THEN TO STANDBY FOR REMAINDER OF FLIGHT. COMPLIED WITH SYSTEM TEST IAW AMM 21-58-00. NO FAULTS NOTED.