The NEW Build Your Own Arcade Controls
Arcade Collecting => Miscellaneous Arcade Talk => Topic started by: MonMotha on January 01, 2011, 03:30:18 am
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...you're my only hope (maybe).
I have a NEO MVH-MV4FT2 motherboard that suffered trace corrosion when the battery leaked. I've already repaired two traces to the RTC RAM in order to get the board to boot, but I've got some graphics corruption still left. I've been able to find one more trace that seems broken, but since it's broken, and it runs underneath some chips, I can't figure out where it's supposed to go (at least not without removing said chips, which I don't want to do). If someone's got one of these boards, a quick check with a meter on continuity can answer my question.
I've got the break marked in red. I marked a via that it goes to near CN8, and it appears to go to one of the pins on E11, as marked with a fat red line. All I need to know is which one, and I can patch the trace up and see if things get any better.
If someone's got a well annotated drawing with everything crossing near the battery mapped out, that would be most helpful, but I think this is the only remaining bad trace.
I have a super-huge, totally uncompressed version of this image if it'll help someone, but I think the JPEG is good enough to get the point across.
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I'm of no use here (no matching boardset), but ChannelManiac (or his Repair Logs (http://newlifegames.net/nlg/index.php?board=19.0)) may be helpful.
I haven't seen him here in a long while, but he is now a mod over at KLOV.
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See the "8" in C1815? The trace in quesiton is the one on the left side of the three traces going under that 8. Take your multimeter probe and scrape the green coating on the trace a bit to get to the copper under it. From there you'll be able to tell where that trace goes. It's going to either E11, F11 or to one of the thru-holes in between.
RJ
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I'll probably have to scrape some soldermask off with an X-acto or something, but that's no biggie. It's so ugly around there that it's tough to find something to poke with the meter probes. I'm 95% sure it goes to a pin on 11E, just not exactly which one as the trace passes underneath it. I was hoping that if somebody had one handy they could poke at it for me to save me some time and potential (though unlikely) farther damage while probing it.