I f'd up my Neo Geo MVS 2 slot board!!!!

treborlicec

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I was cutting the stupd red paper stick on crap away from the solder side of the board in order to change the battery and sliced right through 8 or so traces that are teeny tiny and right next to each other. I'm not confident I can bridge these traces without having them touch. Any suggestions?

http://webpages.charter.net/pinballarcade/IMG_3509.JPG

Thanks,
 
Are you sure they are disconnected? Did you test with a multimeter?

I can't tell exactly where they terminate without removing the rest of that thing. Should have just removed the whole thing to begin with. But I'm pretty sure as now the video is messed up on my game. There is a clear slice throught them.
 
Remove the rest of the pad. Those traces are very simple to fix, use the plate throughs to solder to or you can just follow the point to point on the parts side and do the repair there.
 
I bet you'll find it's easier than what you're thinking. Do some metering and you may find they're not even disconnected. Worst case you could just use big ol' wires (easy to work with) and make the jumps from pad to pad - not the neatest fix but it will work.
 
Scrape the green coating off the traces about 1/8" on each side of the cut. Tin the traces with a hot soldering iron.

Next, tin a piece of stripped 30ga Kynar wire wrap wire. (Radio Shack sells this)

Lay down a thin layer of liquid rosin flux on the traces then put the wire down on top of one of the cut ones. Touch the iron to it on both side of the cut to seat the wire on top of the trace and to solder it in place. Cut the excess wire. Brush on a bit of liquid rosin flux to the next trace and repeat. Keep doing this until done.

The liquid rosin flux helps keep all the solder connections from bridging and going "cold."

RJ
 
Use wire-wrap wire. Follow the traces to a point where you can solder comfortably. Once the board is tested, a little hot glue to hold the wire in place.
 
Scrape the green coating off the traces about 1/8" on each side of the cut. Tin the traces with a hot soldering iron.

Next, tin a piece of stripped 30ga Kynar wire wrap wire. (Radio Shack sells this)

Lay down a thin layer of liquid rosin flux on the traces then put the wire down on top of one of the cut ones. Touch the iron to it on both side of the cut to seat the wire on top of the trace and to solder it in place. Cut the excess wire. Brush on a bit of liquid rosin flux to the next trace and repeat. Keep doing this until done.

The liquid rosin flux helps keep all the solder connections from bridging and going "cold."

RJ

Thanks. I'd rather try this for a neater looking repair. I have the kynar wire (but looked for an hour and can't find it. Grrr.) but need to get some flux this weekend. I'll report back.

Happy Turkey day, all.
 
While you're out shopping, get some non-metallic green fingernail polish and some flux remover.

When finished with the repair and it's back to working again clean the board with the flux remover. After that, brush the fingernail polish over the patched traces.
 
Good to go now. Found that only 4 of the traces were actually broken. I was able to bridge the traces with only solder and did a neat job (if I say so myself :) ) Thanks for the tips. I guess I was worried for nothing, but should have been more careful in the first place.
 
Just remember that it flexes a lot in that area so the solder repair may break some time in the future unless you mount the PCB on a solid board to reduce flexing.
 
Just remember that it flexes a lot in that area so the solder repair may break some time in the future unless you mount the PCB on a solid board to reduce flexing.

Good point with the changing of cartridges, I can see that. I'll add the wire as soon as I can find it. Grrr.
 
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