Did a teardown/clean of my Demolition Man, put it all back together and started getting error message "Ramp Diverter is Stuck Closed."

Double checked how the diverter arm was connected, moves freely, replaced coil sleeve anyway.

Double checked connections, everything seems right.

On power up, the diverter doesn't close, but 65 volts is going to the coil on the high voltage wire (J130-6), 0 volts on the low voltage wire. Moving the diverter arm causes the coil to extend fully, and stay energized until I open the coin door.

All I could find was leading to test the drive transitor, Q64. Will attempt to test that with MM.

Just curious if anyone else has seen/resolved this, and how. Thanks.

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U4 Chip was bad, ordered a replacement, and socket.