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Easy JAMMA Connector Repair

NFGx

NFGx

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Through sheer ham-handed clumsiness I snapped one of the cables off the JAMMA adaptor cable for my Cyber Lead. Luckily all the pins are installed, and five aren't used. They can easily be removed and re-used.

Simply press the central tongue with a tiny screwdriver or whatever, and push it out of the connector. Then slide it back in where you need it to go, and re-solder that wire.

I can snap four more connectors before this becomes a problem. ^__^

This same fix can be applied to any JAMMA device using this Hirose connector.

Shown below: the empty slot where one pin was removed, and the broken pin near the new home for the moved pin.

NamcoJamma-1.jpgNamcoJamma-2.jpg
 
Wish I'd been that lucky on my NAC's Jamma connector.

It had the guide ends, to keep everything lined up, blown out over wear and time....so I had to manually align it every time I changed a PCB, and I misaligned it ONE time, and shorted 5v to ground, and cooked the pins, melted the connector, and a good 2" up the wire harness, in about 30sec. Killed the aftermarket PSU i had in there too, but thankfully not the PCB.

Had to cut every wire and install to a new edge connector, a pair at a time.

NOT a great way to spend an afternoon.
 
NFGx said:
Oof. You never really expect that to happen with 5V but a good reminder of the hazards. Sounds like you were lucky the board didn't suffer a magic smoke release incident.
Click to expand...

Yeah...super lucky.

The plastic for those jamma connectors is SOFT...like the flame from a lighter will char/bubble it in about 1.5 seconds. (use heat guns if you have to resolder and heatshrink!).
 
bagheera369 said:
Wish I'd been that lucky on my NAC's Jamma connector.

It had the guide ends, to keep everything lined up, blown out over wear and time....so I had to manually align it every time I changed a PCB, and I misaligned it ONE time, and shorted 5v to ground, and cooked the pins, melted the connector, and a good 2" up the wire harness, in about 30sec. Killed the aftermarket PSU i had in there too, but thankfully not the PCB.

Had to cut every wire and install to a new edge connector, a pair at a time.

NOT a great way to spend an afternoon.
Click to expand...

I had a NAC with a that Hirose connector and it had at least one of the guides ends broken too so I swapped it out for a fresh one. Yeah I feel you, that certainly wasn't a fun time crouching at the foot of the cab swapping over a wire at a time X/

I recently put a new edge connector on a Blast -001 loom for someone. I could at least do that sat at my bench...... it's still a mind numbing job though. Even though it's the most inefficient way of doing it I always do it wire by wire to make sure to not make a mistake.

It looked like he had the same issue and misconnected 5v to ground.

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i-VFqMZrr-L.jpg


i-SK2PLxZ-L.jpg
 
Jeez, I bet that kicked off some fumes =O I think that's the worst I've seen. Can anyone beat that?
 
FrancoB said:
Jeez, I bet that kicked off some fumes =O I think that's the worst I've seen. Can anyone beat that?
Click to expand...
Nope, mine was only 30 seconds...nowhere near that bad.

However, I was VERY lucky that the astro harness I was working on, did not have the coin box wiring attached, so it was easy to pull and take to the bench....I would NOT have done that laid sideways at the foot of my cab for an hour.

I will say that while i understand the reasoning behind putting 3 rivets in place to prevent the coin counter getting disconnected on the NAC cashbox, the QC/Corportate person who signed off on that is a dickhead.

Has to be one of the most asinine wiring decisions i"ve ever seen.
 
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