A clue in the video shows the bonus ball count unit advancing. A hole relay or a score 100 and advance bonus relay is probably stuck closed by either a closed hole switch or the relay hold circuit switch is closed on the relay.
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A clue in the video shows the bonus ball count unit advancing. A hole relay or a score 100 and advance bonus relay is probably stuck closed by either a closed hole switch or the relay hold circuit switch is closed on the relay.
Check the advance relay for normally open switches that are closed when they shouldn’t be. Also inspect switch wire connections for shorts.
The schematic in post#1 is legible when expanded. After examining the schematic and your video I’ve determined that the trough rollover that is being pushed is trying to pulse the tilt relay latch coil. When this coil pulls in the playfield power is restored, and the score motor is running because of a stuck closed playfield switch or the reset relay didn’t switch over power to the playfield. Once you release the rollover the score motor stops because the tilt relay is not latching, or it’s trip coil is pulling in and not let it relatch. Also the tilt latch coil fires during the reset cycle. Inspect why the tilt relay isn’t latching.
The way the trough switches are set up my guess that this is a 2 ball in trough machine.
Releasing of both balls to start is normal. After that alternate balls will be captured and released in the trough.
Can you post a pic of the mechanical board to help identify tilt relay.
You want to check the manual operation of latching hold and trip coil releasing of the relay.
Watch the relay during reset of the machine to check if it latches also.
On the tilt relay find the switch with the yellow-red wire and a jumper going to the trip coil.
Insert a piece of paper in between this switch to keep it from closing and retest the reset cycle.
Remove paper and see if the trip coil pulls in immediately.
In your 2nd video, when the relay closest to the transformer pulls in its latch coil, it doesn’t latch because the plastic part of the latch is worn down allowing trip armature plate to slide away and not latch without the trip coil pulling in.
The other latching relay isn’t adjusted correctly.
The trip armature plate should be pushing downward more on the latch plate, changing the state of the switches, and releasing when tripped.
Adjust trip coil assembly for proper operation.
To adjust latching relays:
Loosen 2 trip coil housing screws to where the housing can slightly move.
Manually push in on the latching armature plastic ladder until about it reaches about 80 % of its maximum travel.
Move the trip housing so that the trip armature is in its latched position with the other armature.
Tighten down trip housing screws.
Release pressure from latching armature.
Latching armature should stay in latched position with little movement.
Manually inspect latch trip operations
Check or change switch gaps for proper latch and trip positions.
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