Vendo machine trouble

Hi, I have a vendo newer model soda machine, takes cans .
 My problem is after taking the money it will give out 3 sodas at the push of the button.
   Any ideas what I need to do to fix this. I would say the machine is some where in the late 70's to early 80's . I have no pictures.

[collecture]

Sounds to me like you have a bad switch.

I am wondering if it may be wired wrong. I have a pepsi machine that does the same thing also.
 I have several machine that I have bought to fix up but I am having problems with all of them. This machine I thought would be the best to try first.

   Thanks for  Any and All Help !
              Joe

[dr galaga]

Welcome Joe.  Doing three things would help us: post the model number and post pictures of the machine (outside and vending area).  Most of the guys (and a few gals) only go up to machines from the 70's, but let's see what the crew can do! (Boy, that rhymes   )