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Thread: The bad battery thread

  1. #226

    Voltamp's Avatar
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    Gents, can I just ask a related question. Many people have suggested cleaning the board once the battery has been taken out but.... What with? What should I use that won't spread the acid or just eatthrough the traces itself? Sorry if this seems stupid to people, not really an electronics guru.

    Many thanks,
    Alec

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  2. #227
    Cham Cham's Banana
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    Quote Originally Posted by thomas3120 View Post
    Just checked a few things out. There's no continuity between the 2 adjacent solder pads on the positive side.
    The battery I'm using is a re-chargeable VARTA (3/ V80H) (green plastic cover), 3.6V and 70mAh. It's also a Ni-MH instead of the original Ni-Cd.
    I'm still waiting on my JAMMA harness so haven't powered anything yet.
    I went ahead and used the positive battery pin to join those 2 adjacent solder pads. Is this ok?
    Also, a bit more info on my board:
    NEO-MVH MV1 (if this helps any)

    t
    I'm sure someone else here would know more about the specifics of different rechargeable batteries to give a more definitive answer. As far as I know, that battery should work fine.

    Using the positive pin from the battery to bridge the two positive pads on the board should be a reasonable solution to complete the circuit.

  3. #228
    Cham Cham's Banana
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    Quote Originally Posted by Voltamp View Post
    Gents, can I just ask a related question. Many people have suggested cleaning the board once the battery has been taken out but.... What with? What should I use that won't spread the acid or just eatthrough the traces itself? Sorry if this seems stupid to people, not really an electronics guru.

    Many thanks,
    I would use a mild mixture of baking soda and warm water, and dab the solution onto the board with cotton swabs. Once the solution has had a second or two to react with acid that may be on the board, I would then use clean water to swab down the area. This is to help remove any baking soda residue and bring the area to a more neutral pH level. Using clean dry cotton swabs, I would wipe down the area to dry it out. Then repeat the previous two steps again with a high percentage rubbing alcohol instead of water.

  4. #229
    . Yodd's Avatar
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    As an alternative, I have used fresh squeezed Lemon juice to neutralize the acid and then used water and/or isopropyl alcohol to clean up afterwards.

  5. #230
    Timid Neo Newbie

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    Thanks for the reply

  6. #231
    JammaNationX
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    Make sure you remove the battery and any socketed chips before washing.

    After you neutralise the area then just was the board all over with warm water and liquid soap using a toothbrush. After you are done rinsing the board let it stand vertical and drip dry for at least 30 minutes and use canned air or compressed air to get water from under the chips out. After that I let it sit in the sun to dry for about 2 hours if it's nice and sunny some people go longer like 3-4 hours but I'm in Hawaii so maybe it's hotter here.

    Just make sure the board is completely dry before powering it back on.

  7. #232
    drunk downunder!
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    I do the same thing. Baking soda mixed with distilled water to first treat the damaged area and then a rinse off with distilled water. I dont have a compressor or canned compressed air so I just violently wave the board around and most of the water tends to fly out. Towel to dry the remaining water and then I just let it stand vertical for a couple days. I just wish it always worked miracles.

  8. #233
    Timid Neo Newbie

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    Is Channelmanic still on? I tried his website to see if doing board swaps/repairs... no answer.
    Thanks
    Bill

  9. #234
    Mr Neo Fix-it channelmaniac's Avatar
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    Try a PM here

    I'm behind on emails.
    Call me a cheap bastard... I learned to fix things to save money... even surface mount soldering...

    Visit my website: http://www.arcadecomponents.com

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    I've repaired boards for many members here.

    Want me to repair your arcade game board? Look here. I do MVS, AES, and many other game boards.

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  10. #235

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    Thanks for the replies people. Looks like I have some cleaning to do, battery looks like its only just started going so not too much to clean up.

    As for drying it... Well, I live in the UK so I think 2-3 days would be required to dry it out in the sun!
    Alec

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    An MVS-Convert
    Owning, Using, Repairing and Living With A Blast City

  11. #236
    Mr Neo Fix-it channelmaniac's Avatar
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    Quote Originally Posted by Voltamp View Post
    Thanks for the replies people. Looks like I have some cleaning to do, battery looks like its only just started going so not too much to clean up.

    As for drying it... Well, I live in the UK so I think 2-3 days would be required to dry it out in the sun!
    I dry boards in the oven at 170 degrees F. NO hotter.

    The only issue I've found is that silly plastic guide for the mem card on the 2 slot will sag. Just lift it back in place with a butter knife a blow on it until it cools and sets in place.
    Call me a cheap bastard... I learned to fix things to save money... even surface mount soldering...

    Visit my website: http://www.arcadecomponents.com

    ---------

    I've repaired boards for many members here.

    Want me to repair your arcade game board? Look here. I do MVS, AES, and many other game boards.

    My repair logs are have moved to NewLifeGames.com!!!

  12. #237
    Timid Neo Newbie

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    Quote Originally Posted by channelmaniac View Post
    Try a PM here

    I'm behind on emails.
    PM sent... I am actually excited that there may be a way to save my 2 slot board... and from every place I looked online all signs point to you if I want it done right.

  13. #238
    Timid Neo Newbie

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    My 2 slot battery was removed.

    view from another angle
    Last edited by WildBill15650; 08-23-2012 at 12:59 PM. Reason: pic not added

  14. #239
    NEST Puppet
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    Hey guys going to pick up my 2 slot tommorow! This will be the first thing I check when I get her home! Thanks for the heads up!

  15. #240
    Angel's Love Slave
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    Didn't know about the battery thing although I should have because I have PGM CAVE boards and I replaced those batteries .

    Checked my PGM mobo :


    Not good .


    Luckily I still had one battery left from the previous replacements :



    Cleaned up the surround with a little alcohol and wrote the date on the battery .
    Last edited by CaseyTappy; 09-07-2012 at 03:24 PM.

  16. #241
    POCKETBIKE NUT
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    Hello...I come here basically daily to surf threads but I have been way out of focus when it comes to messing with the MVS..my kids play my cabs more today then I do,....with the new baby I just don’t have the time..
    I have known about this dead battery issue for a long time and knew there was a thread here but “sorry’ after reading page after page I have a headache..

    I need some selective help..









    I went to turn on the BIG RED 4 Slot MVS and my Soft Dip settings were back to factory UH OH..
    The games in slot 3-4 were not selecting,registering..(cab off..I open the cab up and reset the third game and then game 3 and 4 work..That’s weird..

    I change my soft dip settings (no level credits on screen) and leave the cab on for a few hours.Back on later it’s holding my setting,but I know the battery is going...Loss of settings seems to happen more then it used to..
    It’s one of those jobs I am WEARY to do but I can solder..
    I have a soldering set as I replace GBA/GBC bateries..

    What I need to know is..
    Is this a simple de-solder battery out and solder it in?,..”any special solder type I need”..

    Where is the Battery on a MVS 4 Slot (Big Board) I assume I have to split the boards..

    I want to keep it simple..just get a replacement battery and install it.

    I went looking on ebay
    Is this what I need?

    http://www.ebay.com/itm/NEO-GEO-REPL...-/380331269179
    Last edited by chris1; 10-09-2012 at 03:29 PM.

  17. #242
    Krauser's Shoe Shiner
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    Glad I read this entire thread. I just sniped a 2 slot off of eBay for dirt cheap, but it has the calendar error message. One of the possible points of failure was the battery, so I was curious as to what others have tried to fix that aspect of the system. I really can't wait until the weekend when I (hopefully) get the board in to mess around with. I have a unibios 3.0 in my AES that I'll probably throw into the 2 slot since it can already save high scores and toss a 3.1 into the AES sometime down the road. Excited!!

  18. #243
    JammaNationX
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    Quote Originally Posted by lastcallhall View Post
    Glad I read this entire thread. I just sniped a 2 slot off of eBay for dirt cheap, but it has the calendar error message. One of the possible points of failure was the battery, so I was curious as to what others have tried to fix that aspect of the system. I really can't wait until the weekend when I (hopefully) get the board in to mess around with. I have a unibios 3.0 in my AES that I'll probably throw into the 2 slot since it can already save high scores and toss a 3.1 into the AES sometime down the road. Excited!!
    If it's a calendar error it's either broken trace(s), bad 4990 or bad crystal usually. Once in a great while it's something else. Either way it's usually a simple fix.

  19. #244
    Krauser's Shoe Shiner
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    Quote Originally Posted by Xian Xi View Post
    If it's a calendar error it's either broken trace(s), bad 4990 or bad crystal usually. Once in a great while it's something else. Either way it's usually a simple fix.
    Awesome, good to know. I read your write up on how to consolize a 2 slot and it looks like something I can get done rather cheaply on my end. Thanks again!

  20. #245
    JammaNationX
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    Quote Originally Posted by lastcallhall View Post
    Awesome, good to know. I read your write up on how to consolize a 2 slot and it looks like something I can get done rather cheaply on my end. Thanks again!
    The guide is really for noobs, which I know you are not. Consolizing a 2 slot only takes about an hour and that includes the time to drill the cover and deburr the edges, easiest board to consolize.

  21. #246
    Mayor of Southtown

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    About to replace the battery on my MV6. Anyone know which battery that uses? Looking at this auction, it seems to hint that it is the only board that uses something special. Anyone know what it needs? Thanks!

  22. #247
    Cheng's Errand Boy
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    Quote Originally Posted by RabbitTroop View Post
    About to replace the battery on my MV6. Anyone know which battery that uses? Looking at this auction, it seems to hint that it is the only board that uses something special. Anyone know what it needs? Thanks!
    Check out this video:
    http://www.youtube.com/watch?v=hTP9_gS31Tw

  23. #248
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    Quote Originally Posted by Xian Xi View Post
    The guide is really for noobs, which I know you are not. Consolizing a 2 slot only takes about an hour and that includes the time to drill the cover and deburr the edges, easiest board to consolize.
    That's what I love to hear - thanks for the compliment.

  24. #249
    drunk downunder!
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    I make a habit of removing the battery regardless of leakage or not. I figure they're probably 20 years old by now and the cost of a holder/3v coin cell why not?

  25. #250
    updyke
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    So seeing this thread (I still lurk from time to time, just don't bother posting), I'm going to pull my 4 slot battery completely. Going to pop the 2 slot cab open and cut the battery there too. I don't need high scores.

    One thing I'm curious about is what about the Hyper Neo? I assume I should probably be worried about that one too? I assume it's just a battery on the board and not in the games?

    Thanks everyone.
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