As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER ENGINE START #1 GENERATOR WOULD NOT CONNECT TO BUS. SOURCE OFF LIGHT WAS ILLUMINATED AFTER ATTEMPTING TO CONNECT. GROUNDED - YES. RAN #1 ENGINE. GENERATOR OPS TEST NORMAL PER AMM 24-11-00-700-803. SUCCESSFUL GROUND VERIFICATION WITH NO HISTORY. OK FOR SERVICE.