I am helping out a good friend get a Road Kings he recently acquired up and running. The right inlane switch and the right ramp left loop switch are registering ok in the Diagnostics Switch edges test but neither is registering during game play. It does not matter if you use a ball or depress the switches by hand. We unplugged the column and row connectors on the MPU Switch matrix inputs and used my Pinitech 64- switch matrix tester to test all switches and they are registering correctly when activated with the switch matrix tester. We checked the switch adjustments and tested for continuity for all wires from each of the switches back to the IDC connectors on the MPU switch matrix and we have continuity as expected.

Would appreciate any thoughts, comments or ideas on what we should check next for this situation when the switches register in switch diagnostics test but do not register during a game. Thanks,

Thanks LTG. The right in lane is a leaf blade switch. The ramp loop switch is a rollover micro switch with actuator arm. The leaf switch on the in-lane was cleaned and adjusted to make sure it was making good contact. We used a DMM meter in diode test to check the diode on the leaf switch and it was reading correctly (game powered off of course). We tested continuity of the leaf contacts and the wiring to make sure there was continuity thru the switch contacts also. I think the micro switch probably needs to be replaced and perhaps the leaf blade switch needs that as well. I can see how a switch might work in diagnostic mode, but not in dynamic game situation if the contact is weak or too slow.