As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAPT CDI DIGITAL COURSE INDICATOR NUMERICAL LIGHTS ARE NOT ILLUMINATING CORRECTLY (SEA MNT NOTIFIED VIA VHF RADIO @ 16:23Z). GROUNDED - YES. REMOVED AND REPLACED MODE CONTROL PANEL PER B737-800 AMM 22-11-34. PERFORMED BITE TEST PER B737-800 FIM 22-11-34 TASK 501. GROUP 30+ 70 BITE OK.