As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT PACK ILLUM IN FLIGHT @ CRUISE, RESET WITH MASTER CAUTION. GROUNDED - YES. REMOVED AND REPLACED R/H PACK TCV VALVE (V00141) REF AMM 21-51-10. OPS CHECK GOOD ALL TEST PASS. THIS CLEARS MEL 21-32B SEAMC MIKE NOTIFIED AND PLACARD REMOVED. GROUND VERIFICATION TEST SUCCESSFUL.