I have changed out the motors on the slots that are malfunctioning. How do I know what my next step is. The sensors or interlocks that show soda sold out and stop the auger. Could these be my problem. Also some dispense 3 sodas at a time while others that are set the same functions perfectly. About to call them for a wiring schematic.
Off the top of my head, I would guess an electrical problem. It could also be a computer problem, which could be connected to the electronics. These super new vending machines are at the end of my level of experience. I would suggest you start calling the manufacturer.
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