Having a problem with my Genesis, game was working file, till it decided to stat showing the tilt switch closed message on boot.

I've started going through the ground mods, have done some of them, but not sure that doing all of them is going to fix the issue.

Did a little research and found if you remove the switch connector from the mpu and the issue doesn't go away then the problem is most likely on the board.

When I did remove the connector rather then the tilt switch closed message I got the slam tilt switch is closed message, so I did the mod to permanently defeat the slam tilt switch and after that with the connector removed the tilt switch closed message was on the screen.

Which leaves me to believe that the issue is somewhere on the board. Just not sure where,or what needs to be done.

So any suggestions would be helpful.