On the I/O board in the board cage in the bottom center of the cabinet, locate connectors 601-604 on the front left corner (the way the board is mounted) of the board. Those are for the dedicated switches. Pin 1 on each connector is solid black (ground). Unseat and re-seat the connectors with the game power off, paying particular attention to pin 1 on each to make sure it is fully seated into each connector. From there the wires go back to the bulkhead connectors on the back wall of the board cage. Push in the wires (into their connectors) on the inside wall AND outside wall - the wires can sometimes fall back out of the connectors on the back wall of connectors especially if the game was just moved.

This is a good thought - there is a ground wire in the connector on the back of the crystal ball PCB and if that vibrates when the VUK kicks it has been known to cause all kinds of issues including resets and light lockups.

Glad to hear this… Ken is the very best.