MV1-A & MV1-FZ battery mod

[Vendest]

Hi, I am Vendest newly registered.

I am facing an issue with the battery type CR2032 installed on 2 nos. 1 Slot MVS boards that I have consolized recently.
I have followed thoroughly the tutorial and disable the recharging function by removing the necessary components.
The battery does not last more than 2 days.
I definitely know that the power is not drained from external hook up (PSU, scart RGB cable, controller)
Is anyone able to advice?

 

[Xian Xi]

It's the brand of RAM on the board. SNK used some brands that use more power than others.

 

[Vendest]

Thanks for your reply.
Since there is nothing I can do about the RAM, would you advise me to reinstall the charging circuit and a rechargeable battery?
Do you know where I could find the specs for D1 & D2 for both MV1-A and MV1-FZ?

 

[Xian Xi]

I would just install better RAM, it's an old board and the RAM can fail any time soon.

 

[Vendest]

Can you confirm for the MV1-A I should replace RAM 3 & 4 type Sony CXK58257AM-10L?

 

[Xian Xi]

That Sony RAM has a very low standby draw so it may be a short somewhere or another component that is using the battery. Make sure you removed the correct components and also there are no shorts.

 

[Vendest]

I have done the battery mod on 2 different boards that ended up with the same problem.
I confirm to have removed the component as per JXN tutorial. Most probably I will bear with it since no short circuits can be found.
Anyway I really appreciate your inputs. Thanks

 

[Xian Xi]

I'll see if I can find an MV1A in my storage to see if I can replicate this problem.