I'm having a similar issue with these same switches in my William s Fire. Weird thing is it works the first time you press it (brings you to music test) but I can't move up or down from there. I tried shorting those pins together like mentioned above and nothing. What would be the next thing to check? Also when I boot the game it doesn't show the software version it just waits a second and then boots to attract mode. Could that issue be related to the coin door switch issue? Frustrating as the game plays great now but I can't make any adjustments. Any thoughts or suggestions would be greatly appreciated

Anyone have any ideas?