I posted this in the WCS owners thread, but figured I'd cast a wider net and see what ideas you guys might have.
I recently acquired a WCS in a trade. The game was absolutely filthy, and had gone from many years on location directly into storage. I don't think any bulbs or rubber were ever changed... BUT, it's cleaning up really nicely. I've run into some problems that I'm a little stumped with. I have no flashers in the playfield or backbox. I changed the bulbs and tested them with a bench rig in the actual sockets on the game-- all are good. Someone suggested the interlock switch may be the issue, so I pulled the connectors and cleaned the spade terminals. After doing that, the game will no longer coin up and the coin door adjustment switch set isn't working now. So I suspect the suggestion that the interlock switch is broken is correct... but I'm open to any and all ideas for things I should be looking at.
Here are the things that have been tested:
- All of the test points on the PPB are giving readings within spec.
- I have 20V at J106-5 and J107-6
- All fuses have been tested, both in situ and out of the game.
- I tested voltage on the individual wires connected to the interlock switch... I have 35v at 2 of the terminals, 10v at 2 of the terminals, and no measurable voltage at the other two.
And my questions:
- is there a way to safely bypass the interlock switch (not permanently... just for testing)? If not, I can pull a switch from one of my other games while I wait for a new switch to arrive
- What function does the *other* switch on that bracket have (the manual indicates "memory protection") and could that have anything to do with the problem?
- Do J106-5 and J107-6 go directly to the interlock switch? If so, I need to be looking for breaks in those wires, as there's no 20v at the interlock switch.
- Could the coin door interface board be part of the problem?
- Are there other things I should be checking?