My knowledge of vending machines only goes as far as knowing how to grind pennies into "dimes" to eat and drink cheaply.

No kidding, a couple of buddies and I got the Secret Service called out to our high school we did it so much. I wonder what the statute of limitations on counterfeiting is? This forum is anonymous, right?.... my good buddy Dave wouldn't squeal on me...
Sorry I have nothing of value to add to your thread, it just brought back the memories. Good luck getting it fixed.