As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#356, PLS-JFK. 'FOUND EPSU 10WL FAULTING THRU MCDU AND AT PHYSICAL PART (EXTERIOR LIGHT FAULT; REMOVAL AND REPLACEMENT OF EPSU 10WL IAW AMM REF 33-51-38. OPS CHECK BAD FAULT (EXTERIOR LIGHT) REMAINS FURTHUR TROUBLE SHOOTING NEEDED.' (SUPPLEMENTAL INFORMATION TO FOLLOW)