Having an issue with a Barracora.

The upper left ball lock gate is misbehaving on me. Sometimes it randomly opens and remains open even if there is a ball locked in there. Or if it shouldn’t be open without a ball locked it opens.

Things I’ve tried…
New roms
Swapped mpu and driver boards, from original boards to aftermarket boards…problems followed.
I’m stumped…any ideas would be appreciated.

Thanks LTG,

I can tell the coil is on when it shouldn’t be.
Which switch are you referring to?
The ball lock?

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So when the gate is qualified to open it should charge the coil and remain open the whole time till it locks a ball or till a ball is drained.

Spent a couple hours on it….

So when I plunge the ball. The ball gate opens about four five second after leaving shooter lane. Even with no other switches after shooter lane switch is deactivated.
No phantom switches are firing in test mode.

All diodes look good.
Everything else is playing perfect except the gate.

Thanks for the suggestion.
I will repin and see if there’s any change.