As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SYR - FLT 1796 EN ROUTE SYR - PHL. ON ROTATION, THE AIRCRAFT LOST ESSENTIAL AC POWER AND RELATED BUSSES, INCLUDING VHF 1 WHICH RUNS OFF THE 28V ESS DC BUS. ELECTRICAL POWER TO ESS AC BUS RETURNED WHEN AC ESS FEED WAS SELECTED TO ALTN. THE FLIGHT RETURNED TO FIELD SYR AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED THE NUMBER ONE ENGINE IDG. OPERATIONALLY CHECKS OK.