DN501E - Vending Incorrectly

[Osiel Torres]

Every other sale it dispenses 2 for one product

 

What can it be ?

[AngryChris]

Welcome. You should post this on the full-line section.  Your description sounds a bit incomplete. Is it literally vending 1-2-1-2-1-2-1.. etc?  Or is it 1-2-0-1-2-0 or is it unpredictable?  Your cam looks right but i can't see the can shims.  In any event, a bad switch is the likely culprit.  The switch is the white piece in the picture.  You need to order a new one and replace it. It's probably less than $15.  This is based off of your description.