The NEW Build Your Own Arcade Controls
Main => Main Forum => Topic started by: chairhome on November 22, 2009, 10:50:23 pm
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Hi everyone,
I've finally gotten around to hooking my MAME cabinet back up after doing some moving around and trying to clean up the cab's insides... I had a question on grounding. Do I need to hook a ground wire to the GND terminal on the JPAC or does that provide a ground for me to use on my switches. I know its a dumb question :-/
Just trying to figure out why I can't get my controls to work right now, running winipac and it doesn't show any controls working. I know I had a similar problem last year where I had a ground problem with my IPAC, but it was fixed... and now I can't remember what I did. Thanks for the help, sorry if this is in the wrong section... I haven't posted in over a year!
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If I understand the question correctly- all the switches/joysticks etc need to return to the JPAC via a common ground wire. So if its an existing cabinet I would expect a common ground wire to your hardware would terminate at the Jpac
Thats if I understand correctly ;D
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Okay, thanks!
I currently have all Grounds on the switches terminating at the Jamma connector. I'll patch it into the Ground terminal on the JPAC as well. Thanks.
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OK I may be wrong. You are correct in that the ground is carried through the Jamma connection - but it still would not hurt to jump it and see if it fixes the issue. I was thinking Ipac not Jpac
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Well, my main question is: Do I need to ground the Ground terminal on the JPAC, or does it supply a ground connection for me to ground the other switches? I'll try again today.
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From the Ultimarc site
Check grounding of the cabinet before proceeding to avoid any danger/damage. The best method of doing this is as follows:
Using an ohmmeter or continuity tester check for a good connection between the following points:
Monitor frame
JAMMA edge connector ground pins. These are the 4 pins at either end of the connector.
Mains power cord ground.
Control panel ground.
Power supply ground if fitted.
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I read that, but I read it as saying that those points on the cabinet need to be grounded...
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If you are grounding your controls to the grounds on the JAMMA connector, you are fine.
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Thanks, so does that mean I have a different problem with my jpac controls not working?
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Do you get any lights on your JPac ? Can we see a picture of your wiring ?
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I get lights on my Jpac. It works fine as the interface between the Arcade monitor and PC. I guess my next step will be to connect the JPAC ground terminal to a ground and see if that gets the controls working in test mode. Thanks for the help efforts, I'll post up pics of what I got later if I can't get it working.
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Never mind, got it working! Thanks for everyone who was trying to help!
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Never mind, got it working! Thanks for everyone who was trying to help!
How did you do it? I'm having the same problem. Thanks!