As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THAT DURING STATIC TAKEOFF, RT BRAKE FAILED MOMENTARILY AND A BRAKE DEGRADED EICAS MESSAGE APPEARED. ABORTED TAKEOFF AND RETURNED TO THE GATE WITHOUT INCIDENT. MAINTENANCE REPLACED THE BRAKE CONTROL UNIT AND THE NR 4 WHEEL SPEED TRANSDUCER. OPS AND TAXI CHECKED GOOD WITH NO FURTHER DEFECTS NOTED.