Looking for some Help, Matrix help.
Few weeks ago, I started getting a switch error on boot up. It would clear, didn't pay much attention to it. Then the game started tilting whenever the upper targets were hit. Left side would tilt machine, Right side would put it back to just an ended game.
Did switch edge test to see what was going on.
All of the column 7 switches would show as column 8 switches, same row as the switch in column 7, as being activated. The reverse, activating Column 8 switch would show the correct switch activating.
Disconnected the ribbon cable to the pcb, and pinned out the switches, and same thing happened. So this tells me there isn't anything wrong on the play field, but something wrong on the PCB.
With column 7 showing as column 8 switches Except Column 7 row 8 does show the correct switch. I am assuming this is because Column 8 row 8 is unused in the matrix.
So where do I go from here? Ideas??