As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SATCOM LOCKED UP ON POWER TRANSFER. WOULD NOT COME BACK WITH QRH PROCEDURE. GROUNDED - YES. FOUND RED POWER LIGHT ILLUMINATED ON FRONT OF SATCOM IRIDIUM TRANSCEIVER. C/B RESET NO HELP. REMOVED AND REPLACED SATCOM IRIDIUM TRANSCEIVER IAW AMM 23-15-00. PERFORMED SATCOM COMMUNICATION SYSTEM ADJUSTMENT AND TEST. OPS NORMAL.