What was found
KOSC - FLT 72016 - SMOKE OF UNKNOWN ORIGIN ESCAPING FROM F/O PNEUMATIC RAIN REMOVAL LEVER. INSPECTED AND FOUND ORIGIN OF SMOKE COMING FROM LIGHT BALLAST AT F/O RT CONSOLE. FOUND BALLAST AT FAULT, DISCONNECT BALLAST AND TRANSFERRED TO DMI NR 22 IAW AIA MEL 33-1 CAT. 'C' SWITCH PLACARDED. REMOVED AND REPLACED BALLAST TRANSFORMER. OPS CHECK GOOD IAW DC8 MM 33-12-0. DMI CLEARED. PLACARDS REMOVED. (X)