As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PER T/C # 78273000 FOUND MSG # 73-11281, EEC CHANNEL IS NOT ENERGIZED WITH THE ALTERNATOR VOLTAGE FLIGHT LEG#3, THIS IS SHORT TIME FAULT. GROUNDED - YES. RAN EEC BITE TEST REF B737-900 73-21-00 SYSTEM OP CHECKS GOOD THIS APPEARS TO BE A ONE TIME FAULT.