Cannot get my monitor or marquee to power up. Something wrong?

[helpmebuild]

I just tried to follow the schematic from The Real Bob Roberts to get my cab wired up properly but am having absolutely no luck. On top of my wiring issues, my hard drive that was complete and ready to go just fell and broke so I am far from pleasant right now. I took some pics and was hoping someone,anyone could help me with this.

One thing I wasn't sure of is if the Gnd +5 -5 and -12 wires coming out from the JAMMA board need to be ran to the power switching supply or not? Also I haven't connected the AC Switch as per the diagram because I don;t want to use that switch and only want to power everything on or off from my power bar - is that whats causing this issue? When I plug the sucker in I get absolutely nothing...no marquee light, no picture, no anything.

If ANYONE could help I could really use it. If I don't get this thing powered up soon and see some sort of result I'm really going to be at my wits end.

Thanks in advance!

[Deadly]

Yes you have to wire your Jamma harness into the switching power supply. Take a PC or monitor power chord, chop the female end off, strip wires and wire it into the power supplies connectors for the AC 115. Then you can plug the male end into your powers strip and use the power strip as your on/off.
For your Marquee to light up you have to supply your light fixture +12V so wire it into your switching power supply to fix that.
As far as the rest of your stuff - kind of a mess and hard to tell what's doing what. I assume you're monitor needs an ISO but for now:
1.) Get your switching power supply wired up and connected to the power strip
2.) Wire in Marquee to power supply +12
3.) Check the +5 output BEFORE you connect game PCB - adjust if necessary
4.) Wire in Jamma Harness to power supply - PAY ATTENTION and PUT +5, -5 and +12 where they need to go. (You screw this up and it could cost you a board set)
5.) Connect game PCB and you should hear it play blind
6.) Then work on getting your ISO wired in and working for your monitor.

[CheffoJeffo]

You are missing a wire from the empty lug on the line filter to the distribution block. That is where Bob recommends the switch be wired. You may not want a switch, but I guarantee you want a connection if you want power.

You definitely need to run the +5, -5, +12 and Ground from the JAMMA harness to the power supply.

Deadly: Why would you run 12V to the marquee ?

EDIT: The monitor looks like it has a ground -- do you have any documentation for it ?

[helpmebuild]

Life Savers!!! I haven't yet tried the advice but I am really getting a feel for what needs to be done, and a little hope was all I needed to keep this thing going.

Chef I am curious though...as the JAMMA I have shows two (2) +5 wires, which of these two am I to wire to the power switching supply? Does it matter?

Also, I don't have any documentation for the monitor...why do you ask? I thought I did when it was the original Wells Gardner but it looks like it was replaced with an RCA during its life in the arcade circut.

Thanks again so much!

EDIT - *I also forgot to mention that I am using a JPAC...does this matter in the case of running the JAMMA harness cables labeled +5, -5 and +12 to the power supply?*

[CheffoJeffo]

Run all 4 +5 (pins C,D,3,4), all 4 Ground (pins A,B,1,2), both -5 (E,5) and both -12 (F,6) wires from the JAMMA harness to the switcher. I've never seen a board that I can think of where the pads weren't common to the appropriate pins in the harness, but I always wire all of them.

I asked about the monitor because I've only ever had two monitors that had a ground (green wire) running in and neither of those required an isolation transformer. RCA may be referring to the tube. If you can take a picture of the monitor chassis (the circuit board), perhaps someone can identify it. Alternatively, check the myriad of stickers and look for a model number (likely starts with WG and includes four numeric digits).

Or you can check Bob's Monitor ID Page to see if you can match your chassis.

[CheffoJeffo]

EDIT - *I also forgot to mention that I am using a JPAC...does this matter in the case of running the JAMMA harness cables labeled +5, -5 and +12 to the power supply?*

You can wire up the switcher since the pads on the JPAC don't go anywhere, but you don't need to if you aren't powering an actual board. In fact, I would lose the switcher altogether (if you run it without a load, then you can kill it). If you want lights for your coin doors, I would tap into the +5 or +12 (depending on the bulbs in question) from your PC, but I would also leave that for last. I never run an arcade switcher in a cab that I am running a JPAC in.

[Kevin Mullins]

I asked about the monitor because I've only ever had two monitors that had a ground (green wire) running in and neither of those required an isolation transformer. RCA may be referring to the tube. If you can take a picture of the monitor chassis (the circuit board), perhaps someone can identify it. Alternatively, check the myriad of stickers and look for a model number (likely starts with WG and includes four numeric digits).

Right off hand it appears to be a K7400 series of sorts, like a WG25K7401 or something. And no, it does not "require" an isolation transformer. Won't hurt it, but doesn't require it.

If you can't find a specific WG # look on the chassis for a screenprinted or little white paper label with a "P###" number on it and we can identify it by that as well.
(like P763)

[helpmebuild]

POWER!!!!

Thanks so much for all the help! I finally got it up and running.

I haven't bothered to check the monitor for the info only because the cab used to run an iso when I first got it when it was Midway Open Ice...for that reason..and because most would tell me that its all around a better idea to run one anyway..I have decided to just use it regardless. On that note though...there is no harm in running an iso and still grounding it via the wire ran from it..right?

Honestly I cannot thank you guys enough. My cab is almost done..and if it weren't for the broken hard drive yesterday..would be pretty much up and running. I will post some pics when it is finished to show everyone what your help and support has resulted in.

Thanks again!

[CheffoJeffo]

I don't see a problem with running the monitor that way.