shmups.system11.org

Shmups Forum
 
* FAQ    * Search
 * Register  * Login 
It is currently Mon Jan 25, 2021 10:59 am View unanswered posts
View active topics



Post new topic Reply to topic  [ 7 posts ] 
Author Message
 Post subject: DoDonPachi Dai-Ou-Jou Pcb Battery replacement
PostPosted: Tue Jul 10, 2012 9:22 am 



Joined: 03 Jun 2012
Posts: 14
I just bought a DoDonPachi Dai-Ou-Jou White label Pcb and I want to change the battery once it arrives,was hoping someone can tell me if the board needs to be powered on while replacing the battery,also can anyone confirm what voltage battery should be installed in the white label pcb i can only find imformation on the black label pcb.If the voltage is correct i was thinking about installing one of these super-caps http://www.altronics.com.au/index.asp?a ... m&id=R4996 which are a good replacement for the neo-geo batterys and from the photos of DOJ pcb's i have seen it looks like it could be the same battery neo's use.


Top
 Offline Profile  
 
 Post subject: Re: DoDonPachi Dai-Ou-Jou Pcb Battery replacement
PostPosted: Tue Jul 10, 2012 1:02 pm 


User avatar

Joined: 26 Mar 2008
Posts: 1364
Location: philly suburbs
the board doesn't need to be powered during battery replacement, as it's not a suicide battery. as a matter of fact, you don't actually need the battery at all. it just saves system changes: freeplay, difficulty, etc.

you can use the standard 3.6v cps2 style battery as a replacement. not sure if that super-cap will work or not. some one else will have to answer that.


Top
 Offline Profile  
 
 Post subject: Re: DoDonPachi Dai-Ou-Jou Pcb Battery replacement
PostPosted: Tue Jul 10, 2012 6:30 pm 



Joined: 26 Jan 2005
Posts: 7910
You'll want a new & freshly installed Varta back-up battery in your DDP-DOJ WL PCB if you plan on converting it to a DOJ Black Label variant with high score saving & high score initial saving functionality (with a single eprom chip swap) perks, necroscope.

Plus the additional benefit of not having to worry about a converted DOJ BL going out on you if the back-up battery does "bite the dust" (like with a genuine DOJ BL board, then it'd have to sent in for repairs to be revived from the dead).

It works flawlessly on my converted DOJ board with the back-up battery installed.

PC Engine Fan X! ^_~


Top
 Offline Profile  
 
 Post subject: Re: DoDonPachi Dai-Ou-Jou Pcb Battery replacement
PostPosted: Wed Jul 11, 2012 2:05 am 



Joined: 03 Jun 2012
Posts: 14
Thanks for the info guys,i will replace it with an original varta battery then,Changing the Rom to black label sounds awesome to me,already have a rom burner so shouldnt be a problem,What rom is used? Is it one from the mame set,any pointers would be awesome,thanks. 8)


Top
 Offline Profile  
 
 Post subject: Re: DoDonPachi Dai-Ou-Jou Pcb Battery replacement
PostPosted: Wed Jul 11, 2012 3:37 am 



Joined: 26 Jan 2005
Posts: 7910
Here's the link to d/l the cool DOJ BL eprom conversion with score saving, courtesy of shmupper yosai:

http://ikotsu.blogspot.co.uk/2012/05/do ... -hack.html

It'll be the single eprom that has a sticker of DDP-v100 on it, swap that one out and put in a new one and presto, your DOJ WL is now a DOJ BL version. How cool is that?

PC Engine Fan X! ^_~


Top
 Offline Profile  
 
 Post subject: Re: DoDonPachi Dai-Ou-Jou Pcb Battery replacement
PostPosted: Wed Jul 11, 2012 5:16 am 



Joined: 03 Jun 2012
Posts: 14
PC Engine Fan X! wrote:
Here's the link to d/l the cool DOJ BL eprom conversion with score saving, courtesy of shmupper yosai:

http://ikotsu.blogspot.co.uk/2012/05/do ... -hack.html

It'll be the single eprom that has a sticker of DDP-v100 on it, swap that one out and put in a new one and presto, your DOJ WL is now a DOJ BL version. How cool is that?

PC Engine Fan X! ^_~

Thanks for that PC-Fan,awesome stuff and to think i probably would have bought a DOJBL if i could have found one,Really stoked i bought a DOJ now :D


Top
 Offline Profile  
 
 Post subject: Re: DoDonPachi Dai-Ou-Jou Pcb Battery replacement
PostPosted: Wed Jan 13, 2021 6:41 pm 



Joined: 15 Dec 2012
Posts: 53
Location: Mass
Please excuse the 8 year necro bump.

I have a DOJ white converted with said black lable rom. Just took the Varta battery that had been replaced in 2012 was starting to form those crystals so desoldered it out a few days ago.

Before I install now a third Varta, would it make sense to install a vertically oriented coin battery holder and use a rechargeable ML2032 instead?

Cheers!

Ps: check your batteries!


Top
 Offline Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 7 posts ] 

All times are UTC


Who is online

Users browsing this forum: Pikkon, setiawan and 16 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to:  
Space Pilot 3K template by Jakob Persson
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group