Coin Mech problem

Lovecraft0110 · Jul 3, 2005

I have a new small problem with my cab (the sound issue is still there. sadly): as soon as the machine has booted, COIN 1 is turned to 1, therefore putting one credit on startup. Not only that, but COIN 1 is permanently set to 1, so using the Unibios In-Game Menu I cannot start a game with player 1, because it just opens up said menu. Also the coin mech simply doesn't work (probably because of this), whenever I put a coin it doesn't register as a credit.

Any ideas? Razoola suggested the jamma wiring may be at fault, or that perhaps the coin mech may be broken or something.

Amano Jacu · Jul 3, 2005

There's a short somewhere that connects the coin pin to a ground, therefore the board acts like the "coin button" was always pressed. This could create quite a lot of trouble with many boards. If I were you I would just disconnect all coin mechs and just install a button that acts as "coin drop" when pressed.

Lovecraft0110 · Jul 3, 2005

Quite correct, sir. I unplugged the two cables which go to the coin mech. Result: whenever one of them touched other adjoining metal parts it added one credit. But still the 1 player was permanently ON, which I find strange. Then I isolated both cables with some tape and now it's ok, but I cannot use coins, which I'd like to. Hmmm...I guess trial and error is the way to go.

Lime2K · Jul 4, 2005

check the microswitch on the coin mech - the terminals are connected differently that all the other microswitches in my cab:

Code:

normal button microswitch:
 _O___
|     |--- <--normally closed
|_____|--- <--normally open (wire here)
   |__     <--ground (wire here)

but on my coin mechs, ths microswitches are wired like this:
 _____
| O   |--- <--normally open (wire here)
|_____|--- <--normally closed
   |__     <--ground (wire here)

check the side of the switches and it should give that info.

I hope this helps!

stuffmonger · Jul 4, 2005

Nice drawing Lime2k. the switch on my cab is a little different though.

Code:

 _____
|     |
|___  |
 |  ||

 ^  ^^
 o  ww
 p  ii
 e  rr
 n  ee

It's wired like the other microswitches though.

Lime2K · Jul 5, 2005

is there writing on the side of the switch? look for a NO (normally open) and GND (ground) connection. That's where the two wires should be. If you could take a picture of the switch (with decent clarity) I could probably help you more.

Grinwing · Jul 5, 2005

The switch itself may be bad. Try hooking the wires up to another switch to see if the problem still exists. Or just swap the two on the coin mechs to see if the problem jumps to the other one.

Coin Mech problem

Lovecraft0110

Ace Gho,

Amano Jacu

Charles Barkley

Lovecraft0110

Ace Gho,

Lime2K

Host for Orochi

stuffmonger

Baseball Star Hitter

Lime2K

Host for Orochi

Grinwing

Rasputin's Rose Gardener