One controlled lamp (here the 10,000 bonus lamp) glows dimly at all times, whatever the game is doing.
Controlled lamp stays dimly lit all the time: replace its driver IC
Cause: The lamp driver chip on the board that controls that lamp has failed.
Checks
- Find which IC drives that lamp from the schematic (IC35 for the 10,000 bonus lamp on this game).
Fix
- Replace the driver IC, fitting a socket so it is easy to change next time.
Games
Source: Pinball Repair help group!! (Facebook group)