Arcade game main board replacment

i bought arcade game,( link below) hope easy fix, found psu bad turn out there issues main board, dead 5v rail, damaged regulators faulty motor driver , on,

what im looking replace whole thing arduino, has 3 motors to control 1 move carousel left when button pressed 1 move arm when button pressed.  there small ir beam sense when game has paid win

then there coin mech interface , 8 segment display show amount of plays
i assume system has way detect carousel , arm location.

it sounds alot of work im assuming available in shield form including sound fxs
http://www.ttnet.net/ttnet/gotoprd/sp675/010/0/05551303231343333333.htm

so what's question?

you're not going find ready-made shield want.  can enough cobble components , write code make happen.

you mentioned motor drivers bad.  need motor drivers arduino control.  motor shield.  how carousel know 3 revolutions have occurred?  assume there sort of encoder or opto-interrupter tell has made full revolution?  or perhaps time based , switch on motor x number of seconds?

you'll have find out more coin accepter find out how works.  pulses wire indicate coin.  7-segment display, run directly 7 digital i/o pins, unless it's more single digit or high current.  if it's more 1 digit, you'd need use driver chip or shift register ic.

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