As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING INITIAL PREFLIGHT, STANDBY INVERTER INDICATION SHOWED ON EICAS & WOULD NOT CLEAR. RAN FIM REF 24-33 FAULT TREE 802 FOUND STANDBY INVERTER SMOKING. INSPECTED IAW FIM 24-51-21-00 NO OTHER DAMAGE TO ANY COMPONENTS BESIDES INVERTER. R & R STANDBY INVERTER IAW AMM 24-33-03-4. OPERATIONS CHECKED GOOD. OK FOR SERVICE.