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buttons on arcade machine have stopped responding
shardian:
If you ground isn't looped, then you have to start at one end and work your way back until you find the break. However, since ALL of your controls aren't working, it is probably near the molex connector, or even farther back.
SavannahLion:
I thought there was an illustration somewhere on here but I seems to have lost it. :cry:
So here are my piss poor illustrations.
The first is if you don't have a ground loop.
The second is a break in the middle. The last two buttons are no longer functional.
The third is a break near the PCB. All the buttons no longer work.
The fourth is a ground loop.
The fifth with a break in the middle. Still functioning.
The sixth is a break on one lead back to the PCB.
The seventh is a break on one lead and in the middle. Two buttons dead.
The final indicates a problem with the PCB or connector. All buttons dead.
trenal:
Im yet to get a multimeter to test for sure, but since all my buttons stopped functioning im thinking with the above info I should check first up the immediate ground connections coming from the jamma harness to the first molex connector then keep going from there.
I have been stretching this area as well when moving the jamma harness to other game boards while the other molex connectors up the chain along with there wiring are well fastened to the walls of the cabinet.
sosuke:
Unfortunately the only real way to check those connections is with a continuity tester/multimeter. Unless it's a blatantly visible connection problem (a wire is cut in half or something is physically busted in a very obvious way) you won't know until you test it. The wire could have a break somewhere in the middle under the insulation and everything will look fine to you, but there is a break in the circuit because the wire is busted and you can't see it.
trenal:
I got a multimeter and was able to detect the dud wire - it was one of the grounds coming straight from the jamma connection to the first molex connector. Cheers for everybodies assistance.
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