Tekken 3 battery replacement.

[pierpa86]

Hello Guys,
I have to swap a battery on my new Tekken 3 pcb.
I'd like to use a regular non-rechargeable battery, but I have a question.
Since the default one is rechargeable, do I have to remove any components to deactivate the charging circuit ?
Since my card has all the additional characters unlocked, will I lose everything ? Aren't they written on the 28C16 non-volatile memory?

 

[kayzp4ul]

I can't speak from experience, but I do believe that you have some time (not a lot) before all the memory clears in order to solder on a new battery. I don't believe that you have to disconnect anything in order to do so either. I'll leave it to someone with more experience correct me if I'm wrong.

 

[pierpa86]

Done some test, and this is the result for all need to replace battery on Namco System 12:

1) All characters unlocked is writed on your 28c16, its nonvolatile memory, so its do not lose a damn things.
2) The default battery is a CR2032, its not recharchable. So no mod is needed.

 

[pierpa86]

 

[kayzp4ul]

For a second I thought you soldered on the yellow battery to MOT3... Great work and very informative! I might have to do this to my system 12 boards as well.