Super Metroid cartridge save issues.

Discussion in 'Repair, Restoration, Conservation and Preservation' started by Ergot_Cholera, Apr 23, 2019.

  1. Ergot_Cholera

    Ergot_Cholera Flaccid Member

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    I have a copy of Super Metroid that has problems with saving. I have replaced the battery with a brand new one and the problem persists, I replaced the new battery with one taken from another SNES game cartridge that was still outputting 3V with the same result.
    I have tried it in several consoles and it makes no difference, it might hold the save for a while but then when I come to play a while later it does not load on the first attempt and then when it does load the saves are gone.
    Could this be a bad SRAM chip?
     
  2. TriMesh

    TriMesh Site Supporter 2013-2017

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    Most likely it's the SRAM - I've also seen similar problems caused by a bad MAD-1
     
  3. Ergot_Cholera

    Ergot_Cholera Flaccid Member

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    Thanks. I am pleased to get a reply from the great TriMesh. Do you know of the cheapest/most available donor that contains MAD-1 and 64K SRAM? Most probably a sports game?
     
  4. TriMesh

    TriMesh Site Supporter 2013-2017

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    Anything with a xx3M board in it will work - you could try something like NBA 95/96, NHL 96/97, FIFA 96 - they should all be OK.
     
  5. Ergot_Cholera

    Ergot_Cholera Flaccid Member

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    My copy is the BA3M-01 PCB. I have bought a cheap copy of Kamaitachi No Yoru which uses the BA3M-10 PCB, with the intention of just swapping over the ROM chips. There are versions of Super Metroid that use this board, so I assume that this would work?
     
  6. TriMesh

    TriMesh Site Supporter 2013-2017

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    Yeah, that should work fine. The general rule of these things is that higher dash numbers are compatible with lower ones, but not necessarily the other way around. I was assuming you were going to be swapping the RAM and MAD-1, since that's less soldering :)
     
    ItsMeMario likes this.
  7. Bad_Ad84

    Bad_Ad84 The Tick

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    It's also assuming there's not an issue with the original pcb.

    Swapping rom is pretty much guaranteed to work, as long as the roms are fine.
     
  8. Ergot_Cholera

    Ergot_Cholera Flaccid Member

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    I did originally intend to swap the RAM and MAD-1, but the PCB of my BA3M-01 is that strange grainy substrate material and the smooth stuff just seems better quality.
     
    Last edited: May 13, 2019
  9. Pikmin

    Pikmin Resolute Member

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    I would just swap the two mask roms on the donor cart for starters which is what you are intending to do anyway.
     
  10. TriMesh

    TriMesh Site Supporter 2013-2017

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    Yeah, but it also reduces the number of games you can use as parts donors - I have a box of old Japanese sports games (which I think I got for 100 yen each at Hard Off), and I try to use those for parts whenever possible.
     
  11. Ergot_Cholera

    Ergot_Cholera Flaccid Member

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    I swapped over the Super Metroid ROM chips to the donor and it is saving fine now.
    It was harder to remove the chips from the BA3M-01 as it has double side soldering, the BA3M-10 donor is single side soldered and seems like a better quality PCB.
    The BA3M-01 board just seems inferior quality, the gold fingers (just learned of that term!) are much too shiny.
     
    Shademp likes this.

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