FBC balls not leaving outhole or trough

kencinder

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I'm not sure what's going on here, all was well and then the balls wouldn't kick out into the shooter lane...then the outhole kicker stopped as well.

Game starts up fine, sits in attract if there's a ball in the outhole. If all 3 balls are in the trough, it will start a game but won't kick a ball into the shooter lane.

I put my meter on all the trough switches and the outhole switch, they're good. Checked the coils for the outhole and trough, they're coming up at around 11.6ohm and 14.6ohm respectively across the lugs, they're not sticking or anything either.

555 is lit for the Solenoid Expander Board...but I haven't checked the board/relay itself(Not sure if it's used for this purpose on this game?).

Edit: Ok now I'm really scratching my head...it seems today I have NO coils.

But here's the strange part. If I turn the game on, go into test mode and let it cycle through the coils...nothing, not a single coil fires. UNTIL I hold the flippers in and it reaches them, they fire and then every single coil works and continues to work as I let it cycle(even once releasing the flippers).
But if I turn it off and then back on...I have to repeat the same process. Argh...
 
Last edited:
Found the problem...connector J4 on the driver board likely needs repinned. Wiggling the connector while the solenoid test was running got them working, the connector felt fairly loose.
 
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