I have a BSD, All four service buttons work as individuals. Problem is randomly it will just start acting like they are being pushed as if your holding them down so it flies through the menus, ANd when your playing it says "open coin door to use service buttons" Because the game thinks Im pressing them..
Honestly the plug portion looks decent enough, all wires seem to be in their appropriate sockets and attached.
Same with on the Switches themselves. None of the solder points seem lose or too corroded. Its grounded correctly.
I tried giving some movement and cleaning it up a bit Sometimes it makes it makes the game unplayable, other times it wont do it for 3 games and just randomly start again.
The cable to the board is 13 wires. Are their any prebuilt units to replace this, I seen you can buy service switches but I don't know if the buttons themselves are bad since they work when pressed manually fine.