jamma fingerboard question

[kenzo42]

1) why are the pinouts for the +5vdc have 6 pinouts? to clarify, right below where the fingerboard says +5vdc, there are an additional 2 pinouts, for a total of 6. same thing for the +12vdc for a total of 4.

2) i'm planning out placing a load on this +5v and +12v. could i place the resistor between pinouts 3 and 1? or C and A (5v)?
6 and 2 or F and B (12v)?



thanks.

[paigeoliver]

The JAMMA harness has multiple +5 and +12 wires both for redundant backup reasons, and because a lot of games pull more juice than you can send across one wire.

When you don't have enough wires for your power then you get games like Pole Position that burn up the edge connector.

[kenzo42]

ahh, i see. any comments on question #2? thanks alot paige

[elvis]

2) i'm planning out placing a load on this +5v and +12v. could i place the resistor between pinouts 3 and 1? or C and A (5v)?
6 and 2 or F and B (12v)?

What for?  Just for testing purposes?  Then yes, this will give you a load.

[kenzo42]

my monitor is jacked through the psu. i'm not using a pcb. i can't unplug the psu b/c then my monitor and its controls won't work anymore. the psu needs a load.

[paigeoliver]

my monitor is jacked through the psu. i'm not using a pcb. i can't unplug the psu b/c then my monitor and its controls won't work anymore. the psu needs a load.

Do you have an old hard drive laying around anywhere? That can provide a load. As can a few PC fans, or lights. The fans and lighting route would probably make the most sense, at least then you will be getting something for the electricity you are using.