On my Baywatch, when I enter the menu screen, it scrolls constantly to the right. If I hold the left flipper it will scroll left. I have disconnected both flipper boards in the cabinet and it still scrolls to the right.

In gameplay, the game works perfect without any issues.

Does anyone have any suggestions as to the cause of this?

I have completely unplugged the coin door connectors while it was scrolling and it did not change. I have also disconnected each connector going into the MPU while this is happening without any change.

The board is clean and I have installed a new game rom and new batteries. The issue occurs regardless of which game ROM I use, RAM or NVRAM chip installed and with or without batteries.

By some miracle, I pushed the button and went into switch test. 63 and 64 are not stuck closed. They register properly when I push the flipper buttons. In fact, there are no closed switches after I removed the balls.

Thanks for the support. After pulling on the wires in all directions, I found one of the coin door buttons was causing the issue. The crazy part is once it starts it would continue cycling through the menu even after I disconnected all coin door buttons.