Neo-Geo Battery question

dlanson

Member

Donor 2012
Joined
Jan 17, 2012
Messages
300
Reaction score
0
Location
Meadow Lake, SK, Canada
I have a MV-1 PCB the battery has green gel coming out the negative end can I remove this and still use the board till I get a new battery replacement. Also what are the specs of the battery and whats the best replacement for these. Thank you.
 
Neo Geo MVS works just fine without a battery. The only difference you will notice is the need to re-do all of your softdip settings every time you turn it on.

The tutorials at JAMMA Nation X : http://www.jamma-nation-x.com/jammax/tutorials.html show you how to do a battery mod to replace the worn out ni-cad battery with a Lithium button cell. Chose the MVS link on the left and then your model of mainboard.

Brian.
 
Well I looked at the site it seems rather extensive but doesn't have the MV-1 the MV-2F is the same type of battery just not sure about the rest thinking I might go with a super capacitor as it looks less dangerous. Just hoping to get more feedback as I don't want to screw this up. :)

Neo Geo MVS works just fine without a battery. The only difference you will notice is the need to re-do all of your softdip settings every time you turn it on.

The tutorials at JAMMA Nation X : http://www.jamma-nation-x.com/jammax/tutorials.html show you how to do a battery mod to replace the worn out ni-cad battery with a Lithium button cell. Chose the MVS link on the left and then your model of mainboard.

Brian.
 
Well I looked at the site it seems rather extensive but doesn't have the MV-1 the MV-2F is the same type of battery just not sure about the rest thinking I might go with a super capacitor as it looks less dangerous. Just hoping to get more feedback as I don't want to screw this up. :)

The MV-1 is closest to the MV-1F, it's just a longer PCB. If you look at the battery it is the same as the one pictured in pretty much all the tutorials... SNK used the same battery across the board models.

I've removed the battery from 2 MV-1 boards, removed the 470 ohm resistor and replaced the battery with a CR2032 and holder. They have worked without issue ever since.

Unless you are a novice with a soldering iron, the mod is very simple.. Even then, it's not very difficult.

Brian.
 
I haven't soldered in almost 20 years I have a scrap PCB that may be my test subject before the real thing I just need to buy a new desoldering gun. The problem is where I live they think that a tube with a rubber pump on it is good enough which it probably is but I would rather do it with a top of the line desoldering gun and be done with it.
 
Definitely remove the battery ASAP. Without the battery it will still function fine, but when the battery begins to leak the corrosion can eat away the traces requiring a decent amount of repair work.

If you add a little coincell battery then remember to snip the resistor (I think it is 470 ohm or 460 ohm) that is right around the old battery (and it is only one you need to get rid of and it should be the only one of that particular size). You can do a search to verify, but this resistor is part of the recharging circuit, so if you aren't using a rechargable, taking this resistor out will stop the battery from attempting to recharge.
 
I have a MV-1 PCB the battery has green gel coming out the negative end can I remove this and still use the board till I get a new battery replacement. Also what are the specs of the battery and whats the best replacement for these. Thank you.

Are you sure this isn't the glue used to hold the battery to the PCB?
 
This is a real dark green a description doesn't do it justice I am wondering if this battery didn't freeze it was in storage all winter and the day I bought it the temp was -30 C. couldn't even turn it on for a couple days to make sure it worked. And I regret putting it in my basement the thing is frickin heavy.

It's semi-transparent, it picks up some of the green from the PCB.
 
Well here is the pic not sure if this is from inside the battery or not my guess is it is.
 

Attachments

  • DSCF3307.jpg
    DSCF3307.jpg
    96 KB · Views: 29
Yes... that's from the battery. It will eat the traces on the board and is nasty...
 
I got lucky there was maybe a pin heads worth touching the PCB the rest was on the battery glad I caugt it when I did I have to thank Teknotoyz for saying to remove it when I quickly looked at the battery and it was good on the one side never even thought to check the other glad he said something otherwise it could of been a lot worse.

Yes... that's from the battery. It will eat the traces on the board and is nasty...
 
Back
Top Bottom