Yellow ground wire ribbon cable go where?

ArccabinOG

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I know that there are a few ground yellow ribbon cables that connects to different parts of the cabinet, I know that the that the joystick is grounded to the coin counter is there supposed to be second yellow cable coming out of it to connect to the transformer? And I'm pretty sure one of the yellow cable is supposed to be connected to the PCB. I believe on the top corner on it? And the smallest one is already connected to the transformer.
 
the game board one, totally my opinion, is not needed. I'm assuming this is a Bally/Midway game, you didn't specify that part. lol
Oh sorry my bad it's a Midway game it's the Galaga cabinet upright. Everything is out of it's place due to the fact I'm putting in a new safer transformer.
 

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yeah, just make sure control panel and coin door are grounded. anything humans can touch. Galaga it might not be a problem, but Pac-Man in arcades I frequented years ago that didn't have those attached... game resets. lol
 
yeah, just make sure control panel and coin door are grounded. anything humans can touch. Galaga it might not be a problem, but Pac-Man in arcades I frequented years ago that didn't have those attached... game resets. lol
I checked the coin door and joystick and it's secure on there. Now dose it depend on which long ground wire (that's on the old transformer) goes to the PCB or the coin door, dose it need to be connected in a certain way or can it be connected with ether one since it's both going to ground?
 
This is another example where the schematics contain the answer to your question.

The yellow wires are called 'field grounds'. They are not electrically required for operation, but rather are there for safety.

Search for 'field ground' to read more about them. Here, I'll do the search for you.
 
This is another example where the schematics contain the answer to your question.

The yellow wires are called 'field grounds'. They are not electrically required for operation, but rather are there for safety.

Search for 'field ground' to read more about them. Here, I'll do the search for you.
i got it now just one question dose one of the field ground attach to the main board?
 
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How do you guys do it by not getting so confused on the blue prints to find what you're looking for. It is a lot to take in.
 
the game board one, totally my opinion, is not needed. I'm assuming this is a Bally/Midway game, you didn't specify that part. lol
So the maid board doesn't need one of those field grounds connected to it?
 
How do you guys do it by not getting so confused on the blue prints to find what you're looking for. It is a lot to take in.

Practice.

Reading schematics is like a language. The more you do it, the easier it gets.

Just take your time and go slow. It'll get easier.


So the maid board doesn't need one of those field grounds connected to it?


Normally, no.

Field grounds are mostly only connected to exposed pieces of metal on the outside of the cabinet, that a player could potentially come in contact with.

The idea behind field grounds is that if there ever were a wiring fault or other condition in the cabinet that caused any of the exposed metal parts to get electrified (like the control panel or coin door), the field ground will short that voltage to ground (and blow a fuse), instead of it electrocuting the person.

Technically you could remove all of the field grounds, and the game should still work, as the field grounds are not part of the game's operating circuitry. They're mainly there to protect humans. (And possibly to short static electricity to ground, so you can't zap the coin door and get free credits).
 
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