Grand Prix
Williams, 1976On a Williams Grand Prix, the left and right bonus holes and the top hole stopped working. Noticed the first bonus insert does not light up on a new game and the ball will not eject into the shooter lane. This all happened at once.
Previous owner had these issues but when I got it home, they all worked for a week or so. Could all these issues be related?
Quoted from Smirnoff:On a Williams Grand Prix, the left and right bonus holes and the top hole stopped working. Noticed the first bonus insert does not light up on a new game and the ball will not eject into the shooter lane. This all happened at once.
Previous owner had these issues but when I got it home, they all worked for a week or so. Could all these issues be related?
Eject holes not working is usually caused by the delay relay. Check if it's energized.
If not I think I remember those two things may be on the same switch stack on the score motor...
Check the sequence on the schematic from 13.5 - 15.5. They're tied in. Motor switches to check are on the bottom left of the schematic.
Quoted from Smirnoff:the left and right bonus holes and the top hole stopped working
Are the Eject relays activating? (There are two: the Top Eject relay and the Eject relay)
Quoted from HowardR:Are the Eject relays activating? (There are two: the Top Eject relay and the Eject relay)
If I close those relays manually, all holes eject and the ball will eject to the lane.
Quoted from Smirnoff:If I close those relays manually, all holes eject and the ball will eject to the lane.
Check this circuit especially the 2 indicated switches
Quoted from currieddog:Check the sequence on the schematic from 13.5 - 15.5
Quoted from HowardR:Check this circuit especially the 2 indicated switches
@howardr, all i have is a pdf of the schematic. What is under the first arrow. Looks like make brake but i cannot make out the rest.
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Herndon, VA