The bad battery thread

TempestPSO

n00b
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May 5, 2010
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30
So I just bought a MVS 2 slot and am not very technologically skilled, Is there a way I can just take that battery off the board and run the neo geo without the battery. if so how do i do that and what are the pros and cons. Just looks like it can really F up the works if you don't keep on it.
 

Xian Xi

JammaNationX,
15 Year Member
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Dec 1, 2005
Posts
27,748
Just desolder the 2 points under the foam pad and remove the battery.

Only con is that you will not bea able to keep settings once the power is off such as soft dip settings and game scores.
 

SetaSouji??

There Can be Only One
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Mar 31, 2009
Posts
4,158
Has anyone come up with a socket solution for batteries yet? I'm about fed up with my 2 slot blanking my goddamn scores :mad:
 

Xian Xi

JammaNationX,
15 Year Member
Joined
Dec 1, 2005
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27,748
Has anyone come up with a socket solution for batteries yet? I'm about fed up with my 2 slot blanking my goddamn scores :mad:

Just remove the 470ohm resistor in the charging circuit and remove the battery and replace it with a coin cell battery holder and use a 3v lithium coin cell.
 

BeefyWhale

Rugal's Thug
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Apr 26, 2010
Posts
92
Thanks to everyone for keeping this fresh in your mind. I had no idea since this is my first Geo.
 

TempestPSO

n00b
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May 5, 2010
Posts
30
Quick question, I just checked my board and the battery does seem to be leaking ever so slightly on the negative side. The battery how ever is still holding a charge, since the battery is still holding a charge is there anything special I should do, I noticed another person in this thread removed a battery with a charge and appeared to have shorted the board. I have a mvs 2 slot if that makes a difference. I was planning on just heating up the flux and ganking the battery entirely for a while.
 

TempestPSO

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May 5, 2010
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Got my leaking battery removed, Haven't got the guts to solder on a new one yet but I'm sure resetting options and not having high scores saved will get old quickly. Thanks for the help, if not for this site I would have never known to look and some time down the road I would be in deep. Thanks
 

massimiliano

ネオジオ,
20 Year Member
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Feb 27, 2004
Posts
3,223
Just remove the 470ohm resistor in the charging circuit and remove the battery and replace it with a coin cell battery holder and use a 3v lithium coin cell.

I would advice that too, I changed all my 2/4/6 slot that way and it's a clean and solid mod.
The boards were clearly engineered with more than one option for the battery, you can find multiple pins for at least two combination of attach.

coinslot.jpg


I would put my hands on an howto to make the same mod on FZ/1B model, as the recharge circuit seems different/difficult to bypass..
 

TempestPSO

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May 5, 2010
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K removed my battery but did not put a replacement battery in, now upon boot up I get a flash or 2 of green screen before the neo geo start up screen comes one. Is this normal for not having a battery attached.
 

RGB32e

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Dec 8, 2009
Posts
40
Just remove the 470ohm resistor in the charging circuit and remove the battery and replace it with a coin cell battery holder and use a 3v lithium coin cell.

Oooh... that's the exact battery info I needed! Thanks!
 

muddymusic

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May 17, 2010
Posts
13
Hi guys,
just joined up after reading through most of the forum and wanted to thank everyone for the extremely useful stuff on here.
I was looking for a cheap cab for a mame project and the cheapest/nearest one I could find was a dedicated neo cab - which thanks to the info here i've decided to restore instead of butcher :)
Was sold as faulty and when opened up looks like another victim of battery corrosion....
Very pleased to know i've got somewhere to find help when I get started though!
 

muddymusic

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May 17, 2010
Posts
13
I guess this explains why my 6-slot doesn't work...
I'm no pcb expert but this doesn't look good!

Is this worth repairing or should I be looking to get another board?

battery1.jpg

battery2.jpg
 

muddymusic

n00b
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May 17, 2010
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Would be great if it could be fixed up!
Can you recommend anyone who does these kind of repair jobs as i'm sure you're the guys who will know.
 

IronGiant

Armored Scrum Object
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Jan 10, 2004
Posts
263
Would be great if it could be fixed up!
Can you recommend anyone who does these kind of repair jobs as i'm sure you're the guys who will know.

Well, your best bet is Channelmaniac but he's in the States - he REALLY knows his Neo Geo stuff though! :)

If you want someone in the UK then I'm happy to take a look at it - Neo Geo boards aren't my speciality area but I've fixed a few in my time. The damage on your board is hard to ascertain from the pics, it might be worse than it looks (or perhaps not even as bad).

Even if that is repaired it's possible that there are other faults preventing the board from working.

Either way, your repair charges aren't going to be cheap whether you send it to the States or to me in the UK - at a guess I'd say look to spend at least £50 (including postage/shipping) so you may prefer to keep your eyes open for a working board. Not sure how much they go for these days.

Feel free to PM me if you want to send it to me, but I think that Channelmaniac really is the absolute best when it comes to fixing Neo Geo boards. Not sure how much he would charge though.

Here he is:

http://www.neo-geo.com/forums/member.php?u=12525
 

muddymusic

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May 17, 2010
Posts
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Thanks for the info, when I bought the cab I wasn't planning on spending too much on it but when I opened it up the 6 slot was full with games which weren't listed in the description so figure i've saved myself a bit for repair costs as don't have to spend out on carts when it's working.
 

IronGiant

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Jan 10, 2004
Posts
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Fair enough - just as long as the carts work and aren't bootlegs. ;)

Uo to you how you'd like to proceed - PM channelmaniac perhaps and me if you'd like to check on repair prices, shipping, whatever. :)

There may even be other Neo Geo repairers here that are in the UK, but none spring to mind.
 

muddymusic

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May 17, 2010
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Can't pm yet as guessing i'm still a potentially annoying newbie, will do once have permissions! :)
 

El Capitan

Mai's Apprentice
Joined
May 19, 2004
Posts
1,811
Six slots are notorious for not working.

I would suggest that your best bet is to get a 2 slot, if you want a multi slot, or get a one slot - they never go wrong (n.b. they do sometimes go wrong)

In the UK, I'm not aware of any repairers. Not any proper ones anyway.

Channelmaniac I think has a real in depth knowledge. Take a look over here: http://newlifegames.net/nlg/index.php?board=19.0 for some of his work.

Good luck!
 

muddymusic

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May 17, 2010
Posts
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Certainly would be interested in that, can't pm you as too new, could you mail me? Thanks.
 
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