i have a grub a dub dub fruit machine on a genesis MPU5 Board it seems to be paying out to much but not to me to my stepson i can see were the percentage key is its black with a little blue box on it i would be grateful if someone could tell me how to set this to the lowest percentage payout and what the lowest % is please
its probably going to be 70%,have you tried taking the key out and setting the switches on the mpu,if it goes into alarm i would imagine you need a different key
