One coin gives two credits

snapJaw

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Ok - haven't seen anything posted about this that I could find.

A friend called about a game he has (Marvel vs Capcom) that is giving two credits every time he puts a quarter in. I already had him check the settings - it is set for 1 credit on one coin. I'm guessing it must be wired funny or the switch is bad - causing the coin to switch twice instead of once? Could it be the game board logic on the coin up? I guess I'll take another pcb over to test that.

Anyone have thoughts on what this could be? I'm going to look at the game tomorrow.

Thanks!
 
first, check the dip yourself to ensure it's right. i'd try then tripping the coin switch by hand to see what it does. does it do that on all the mechs or just one?
 
Upon inspection - the two coin wires (coin1 and coin 2) were split at one point in the loom and joined together. I'm not sure what this was supposed to accomplish (it was obviously done on purpose) but when I separated them and re-insulated the wires, the coins came up normal.
 
that makes sense. it was tripping both coin circuits every time, so that was what did it. it would be the same thing as dropping a quarter in each mech simultaneously.
 
Upon inspection - the two coin wires (coin1 and coin 2) were split at one point in the loom and joined together. I'm not sure what this was supposed to accomplish (it was obviously done on purpose) but when I separated them and re-insulated the wires, the coins came up normal.

If the game was operated somewhere, then this may have been intended to do exactly what it did: give 2 credits per coin. When I was in Niagra, the hotel's arcade had a kind of odd setup: they kept the token price at $1. The newer equipment in the bar area (latest big buck hunter, some high-end driving cabs, the big terminator cab, etc) were like 2-3 tokens per play, but in the other room where they had a 48-in-1 and a galaga and an old pinball, things were like 2 plays per token.

If you wanted to do that (2 plays per token) and you didn't have a setting for it in the game, one way to do it would be what you saw: hack the wiring so every coin triggered both coin inputs.
 
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