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Thread: MVS MV-1C Unibios Issues

  1. #1
    . borgi's Avatar
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    MVS MV-1C Unibios Issues

    I bought a consolized MVS and it was working fine at first, playing original carts (KoF '98), but then I started getting error messages that stopped my games. The error messages are always slightly different. I e-mailed the person who sold me the MVS and they told me to "push down on the unibios, maybe it got loose". I opened up the console to look at the PCB and it doesn't look like any of the images when I search for "MV-1C Unibios". Any idea what could actually fix this problem? IMG-0601 (2).jpgIMG-0599 (1).jpg

  2. #2
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    if you look up to the fuse there are 2 chip sandwiched, the top one is the unibios. check if all legs are rightly soldered with the original rom legs

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    . borgi's Avatar
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    Thanks. Forgive my ignorance, but are the 2 legs on the bottom left supposed to be off the board like that?

    IMG-0603.jpg

  4. #4
    Maxima's Barber
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    It is safe to leave those two pins unconnected.

  5. #5
    . borgi's Avatar
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    Hmm...well it seems like everything is connected then. This is what I get for buying a CBox.

  6. #6
    Edo Express Delivery Guy
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    Try cleaning the cart(s) and the cart slot.

  7. #7
    N00b of Syougi DasiyAge's Avatar
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    4th pin from the left on the bottom of the unibios (towards the jamma connector) looks a little wonky in the picture. Can you see if it's connected? If you have a multimeter, test for continuity between the top and bottom of each pin on the unibios. That will at least rule out that much.

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    . borgi's Avatar
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    Thanks that is helpful. I do not have a multimeter. I also do not have a soldering iron...I'm assuming I need one to ensure connection? If so, any budget recommendations?

  9. #9
    Hardened Shock Trooper
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    Quote Originally Posted by borgi View Post
    Thanks that is helpful. I do not have a multimeter. I also do not have a soldering iron...I'm assuming I need one to ensure connection? If so, any budget recommendations?
    Plenty cost effective soldering irons on Amazon that will do the trick. You may want to just consider a Neo Bios Masta and a regular Unibios install. Bypass that whole mess.

  10. #10
    . borgi's Avatar
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    Quote Originally Posted by NexusX View Post
    Plenty cost effective soldering irons on Amazon that will do the trick. You may want to just consider a Neo Bios Masta and a regular Unibios install. Bypass that whole mess.
    I think thatís the route Iíll go. Thanks everyone for the help.

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    by the way i have found very interesting to use unibios on a surface mounting chip

  12. #12
    Cheng's Errand Boy
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    Quote Originally Posted by NexusX View Post
    Plenty cost effective soldering irons on Amazon that will do the trick. You may want to just consider a Neo Bios Masta and a regular Unibios install. Bypass that whole mess.
    Even better a NeoBios Masta VMC. doesn't require any soldering and adds a memory card to your MVS system. Best of both worlds.

    https://www.neogeofanclub.com/projects/neobiosmasta-vmc

  13. #13
    Hardened Shock Trooper
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    Quote Originally Posted by Hawwa View Post
    Even better a NeoBios Masta VMC. doesn't require any soldering and adds a memory card to your MVS system. Best of both worlds.

    https://www.neogeofanclub.com/projects/neobiosmasta-vmc
    Fair enough. If you are gonna make the effort might as well dump the extra bucks into it and get more functionality out of it.

  14. #14
    N00b of Syougi DasiyAge's Avatar
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    VMC has been out of stock for a few months. But there's a newsletter you can subscribe to that will notify you if they go back on sale

  15. #15
    Cheng's Errand Boy
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    Or PM Brian on twitter. I did andhe told me via PM when it was for sale again.

    He also publishes interesting vg stuff so...

    The twitter username is @turfmasta

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