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  1. M

    Need help with ryko mucb

    I am having a problem with a Ryko unit with a multi-upgrade coin box. Sometimes codes with 1,2,or 3 come back as "invalid code" and replaces the 1,2,or 3 with a 0. I have replaced the keypad, coin box computer and code-a-wash box and it still does it. I have also checked the wires for...
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