As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SATCOM APPEARS TO BE INOPERATIVE. NO PROMPT ON MENU PAGE. CB NOT TRIPPED. DISPATCH ATTEMPTED CALL. NO JOY. ACFT GROUNDED. CYCLED SATCOM POWER C/B IAW FIM 23-15-00-23-801. SATCOM PROMPT HAS RETURNED TO MCDU'S MENU PAGE. OPS VERIFICATION TEST IS GOOD.