Main > Main Forum
buttons on arcade machine have stopped responding
trenal:
Hey,
Ive got a 6 slot neo geo cabinet which I had an intermittent problem with but it now appears permanent. In the past when the buttons stopped working (All buttons stop responding on the control panel but the test/service/volume knobs on the door all still work) I would jiggle around with the wiring a little bit to get it to work. Now it seems more permanent and this time around ive also lost response from the test and service buttons along with all the buttons on the control panel but at least the volume control still works. I fear if i jiggle the cabling around some more ill probably lose that as well.
Ive searched around and have been given the tip to check the grounding which sounds like it might be common to all these buttons, any tips for how exactly I go about doing this? Ive looked around at the wiring coming from the buttons (particulalry the black ground wires), through to some molex connectors and then through to the jamma harness but I see no visible signs of loose wires or anything.
Thanks
Alex.
sosuke:
Get yourself a multimeter with continuity check (make sure it has that ability) and check to see where the breaks are. You put your ground probe on one end of the wire and the other probe on the other end of the wire. If the meter makes a beep (assuming you buy one that beeps, READ THE MANUAL) then you have continuity and that isn't where your break is. Once you test one that doesn't make any noise, that is where your problem is. Replace that wire. Of course you might just have a loose connector somewhere, make sure everything is actually plugged in before you do anything else :)
I would start by checking that molex connector (and jamma connector), unplug it and plug it back in. If that doesn't do anything. Unplug the molex connector and check your continuity from the buttons to the molex connector to make sure they are all good. And then check from the molex connector to the jamma connector.
trenal:
thanks for the advice, ill get myself a multimeter and check some of the wiring.
One further question; could one bad wire be responsible for causing all the buttons to stop working or will it more then likely be a combination?
shardian:
If the ground wire isn't looped, yes it can make all buttons stop working.
trenal:
--- Quote from: shardian on July 17, 2007, 09:17:21 am ---If the ground wire isn't looped, yes it can make all buttons stop working.
--- End quote ---
What do you look for to check if this is the case?