Hi,
It seems to have re-set the score reels to zero; I'd imagine that those top lanes A to E meant to be lit at the start of a game, if so that control bank (probably under the playfield) has reset, if there's another for the targets/bumpers then that too. Next would be returning the ball counter unit to zero and serving out the first ball - Gottlieb e/m's don't enable the flippers and playfield solenoids until the ball count unit steps up to '1' (there's nothing lit on the card holder display). This occurs when the ball crosses a switch in the runway between outhole and ball shooter, so if the outhole solenoid isn't working or the ball isn't present the start-up sequence can't be completed.
Is the picture showing the m/c simply after switching on? Gottlieb (and the other u.s. manufacturers) e/m games usually didn't light up to that extent 'from cold' - Williams and Bally games had contacts on the left flipper button which would bring in the 'Hold' and/or 'Game Over' relay to make them more attractive, but Gottliebs would just sit with the 'Tilt' lamp lit until they were started up properly (or the Hold relay was pushed into contact manually). Maybe this one has the Hold relay jammed On.
Anyway, do you have the diagram for the machine? Gottlieb ones all seem to be drawn in the same format. The mains circuitry is bottom right, usually with the coin switches, Replay/Start button, start relay, etc.
Moving upwards, next is the transformer, with the 25v power for relays and solenoids on the right and 6v for lamps on the left. In the 25v section, the most important operating circuits are at the bottom, with the playfield devices at the top, cut off by contacts on the Tilt and Game Over relays (shown in the r/h vertical 'return') . Look for the solenoid winding marked 'outhole' or 'ball feeder'. The circuit connections for each relay, solenoid and disc/wiper unit are drawn left to right, including relay contacts and ones on the motor.
