As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE TAXIING THE BRAKES WOULD ALTERNATELY WORK THEN FAILED. SIMILAR TO ANTISKID TEST. DUPLICATED DISCREPANCY. TROUBLESHOT THROUGH MM CH FAULT ISOLATION 32-40-03. ANTI SKID CONTROL BOX FAILED. REPLACED ANTI-SKID CONTROL BOX IAW MM CH-32-40-00, OPS CHECK GOOD.