As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACFT DIVERTED DUE TO AVNX MAU 3A FAILURE. AFTER LANDING CIRCUIT BREAKER B34 MAU 3 POWER TRIPPED. R & R POWER SUPPLY MAU 3, POWER 1. OPS CHECKED OK IAW FIM TASK 45-45-21-47. THE FAULT REPEATED AND THE MAU3 NIC 1 PROC MODULE WAS R & R IAW AMM 31-41-04. OPS CHECKED NORMAL.