My Old Coney Island had a row of switches out. It ended up not being anything on the play field, but a diode on the MPU. There is a diode associated with each row of switches and one of the dip switches on the mpu. One of them was bad. Replaced the diode on the mpu and the switch row was back to working again.

If anyone has some advice on a Sharp Shooter II issue with the Echo Lake mpu please let me know. I just installed the board the other day and if the displays are plugged in, it causes the mpu and sound board to not boot all the way. Unplug all the displays and the game/sound board both boot fully and the game is completely working. Strange! It seems like each display plugged in causes different behaviors with the game that render it not booting fully to unplayable.