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Thread: How to connect Mizuho vintage to 9v battery

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    Pachi Puro lotsoballs's Avatar
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    Default How to connect Mizuho vintage to 9v battery

    As the title states I’ve got a Mizuho I’m trying to connect a 9v battery to; I bought a kit to do so; it was fairly easy on the other Nishijin I’ve got but this one has me stumped. Couple questions:

    1. The big connector on the upper right has 4 different color wires red, green, and yellow/blue wire share a pin. (3 pins total in the connector). How do I hook up the positive and negative wire I’ve got?



    2. It appears a previous owner has been fooling around with the wires on the leaf switch for the reward light; I don’t know if they screwed something up or I need to fix the wiring? There’s some mismatched colored wires twisted together. Pics of how the wiring is supposed to look would be helpful!



    Last edited by lotsoballs; 09-19-2020 at 06:10 PM.

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    Default Re: How to connect Mizuho vintage to 9v battery

    since the wires have been cut you are going to have some trial and error

    the green plug with the fuse should be a positive.. try the others until you get the lights to work right..

    when testing vintage machines in the past i have found power to the wrong wire will light a bulb but not the other.. make sure you get both working..

    and of course make sure the fuse and bulbs are in good working order
    Never Doubt that a small group of thoughtful, .......... /........ If your not going to stand behind our troops
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    Kungishi Tink's Avatar
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    Default Re: How to connect Mizuho vintage to 9v battery

    If it's not been messed with. Green + and blue & yellow together -20200920_163713-1.jpg

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    Pachi Puro lotsoballs's Avatar
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    Default How to connect Mizuho vintage to 9v battery

    Quote Originally Posted by Tink View Post
    If it's not been messed with. Green + and blue & yellow together -20200920_163713-1.jpg
    That works! I had two issues throwing me for a loop when testing the various wires earlier when neither bulb would light:

    1. Low ball warning light socket had bad connection unless the bulb is screwed in extremely hard. (Fixed)

    2. Upon close inspection and removing the leaf switch I found somebody yanked on one of the wires that were twisted together that connects to the leaf switch and broke the solder loose so the leaf switch doesn’t make a full circuit upon jackpot for the reward light (will fix tomorrow)

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    Default Re: How to connect Mizuho vintage to 9v battery

    glad to see your heading in the right direction
    Never Doubt that a small group of thoughtful, .......... /........ If your not going to stand behind our troops
    ...committed people can change the world. ............. /.................Please, Please stand in front of them
    .....Indeed, it is the only thing that ever has............./
    .........................................Margaret Mead

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