That's what mine was doing. Sounded like it was closing about 10 times and then a couple others would close. It was one switch on the row that was wired incorrectly. Unsolder the white/green wire from all of those switches but make sure the white/green still has continuity to the last switch. Test that one, then solder on the next, test both, etc... When it starts going crazy again, you found the badly wired switch.